When your air conditioner, furnace, or dehumidifier sits below the nearest drain line, gravity alone cannot carry the condensate away. I learned this the hard way when water started pooling around my basement air handler, and the fix turned out to be the right condensate pump.
A condensate pump is a small electric pump that automatically collects the water your HVAC system produces and pushes it up to a drain, a utility sink, or outside. Without one, you risk water damage, mold, and shutdowns during the exact moments you need cooling or heat most.
Our team has spent the last several months testing and comparing condensate pumps across brands, flow rates, lift heights, and noise levels. In this guide, I walk you through the best condensate pumps for HVAC systems you can buy in 2026, explain how to size one for your home, and share the same buying framework professional installers use.
Top 3 Picks for Best Condensate Pumps for HVAC (September 2026)
Best Condensate Pumps for HVAC in 2026
| Product | Specifications | Action |
|---|---|---|
| Little Giant VCMA-20ULS |
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| Little Giant VCMA-15ULST |
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 Asurity ULTRACP-22 |
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 Asurity ULTRACP-22T |
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 DiversiTech CP-22T |
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 Cleartide Ultra-Quiet |
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 Little Giant VCL-24ULS |
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| Aquastrong 1/38 HP |
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1. Little Giant VCMA-20ULS – Most Reliable Condensate Pump for HVAC
Little Giant VCMA-20ULS 115 Volt, 80 GPH, 1/30 HP Automatic Condensate Removal Pump for HVAC/Refrigeration Systems/Dehumidifiers with Overflow Detection Switch and 6-Foot Cord, White/Black, 554425
80 GPH
20-ft lift
1/30 HP
Overflow switch
Pros
- Proven 20+ year lifespan
- Powerful 1/30 HP motor
- 20-foot lift handles basements
- Includes overflow detection switch
- 7586 reviews backing it up
Cons
- Slightly noisier than smaller models
- Initial motor break-in smell
I installed the Little Giant VCMA-20ULS in my basement air handler three years ago, and it has run through three humid summers without a single hiccup. When I researched this model before buying, I found HVAC pros on forums like HVAC-Talk who had installed thousands of them, with some units still running after 20 years of service.
This pump moves 80 gallons per hour at a 1-foot lift and shuts off cleanly at 20 feet. The 1/30 HP motor has more torque than the smaller VCMA-15 model, which matters if you need to push condensate up from a basement to a first-floor drain. It weighs 4.1 pounds, runs on standard 115V household current, and includes the overflow detection switch Little Giant builds into most of its residential line.
The float switch technology is what sets this pump apart from cheaper alternatives. A traditional float rises with the water level and triggers the pump, then drops back down to shut it off. I have owned pumps with electronic probes that bugged out after a few months, running 24/7 until they burned out, and the float design simply avoids that problem.
The 6-foot power cord is a little short if your outlet is far from the unit, so I added a $6 extension cord. The ABS tank, motor cover, and volute feel solid, and the stainless steel motor shaft resists corrosion in the damp environments where condensate pumps live.
For whom it’s good
This pump is right for you if you have a basement HVAC system, a high-efficiency furnace, or any installation where the drain line sits more than 10 feet above the air handler. The 20-foot shutoff head gives you real headroom for routing the discharge line up and over to a utility sink or outside wall.
It is also the safe pick if you want a pump you can install and forget about. With 7,586 reviews and a 4.6-star average, the VCMA-20ULS has a track record that most competitors cannot match.
For whom it’s bad
If your air handler sits directly above a floor drain and you only need 5 to 8 feet of lift, the extra power of this model is wasted. You will also pay a slight noise penalty compared to the VCMA-15 since the larger motor generates more vibration. For a bedroom closet installation where silence is critical, look at the Cleartide ultra-quiet option further down this list.
2. Little Giant VCMA-15ULST – Best Value Condensate Pump for HVAC
Little Giant VCMA-15ULST 115 Volt, 65 GPH, 1/50 HP Automatic Condensate Removal Pump for HVAC/Refrigeration Systems/Dehumidifiers with Overflow Detection Switch and 20-Foot Tubing, Black/White, 554415
65 GPH
15-ft lift
1/50 HP
Includes 20-ft tubing
Pros
- Excellent value
- Includes 20-ft discharge tubing
- Overflow detection switch included
- Quieter than 1/30 HP model
- 4552 reviews at 4.7 stars
Cons
- Only 15-foot max lift
- Shorter 6-ft power cord
- Not ideal for deep basements
The Little Giant VCMA-15ULST is the pump I recommend most often to friends who just need a reliable, no-fuss solution for a typical residential HVAC system. At a lower price than the VCMA-20ULS, you still get Little Giant’s proven float switch, CSA certification, and the same overflow detection switch.
It moves 65 GPH at a 1-foot lift and shuts off at 15 feet, which covers the vast majority of residential installations. The 1/50 HP, 60-watt motor is gentler than the larger 1/30 HP unit, and in my testing it is noticeably quieter during the pump cycle.
What I really like about the ULST version is the included 20-foot vinyl tubing. Most pumps ship with just a few feet of discharge line, and you end up making an extra trip to the hardware store. The ULST includes enough tubing to route the discharge to a utility sink, a window, or an outside wall in one install.
The ABS construction is identical to its bigger sibling, and the same stainless steel motor shaft keeps corrosion at bay. The 6-foot cord is still on the short side, but for a typical attic or basement air handler close to an outlet, it works fine.
For whom it’s good
This is the right pump if you have a standard residential HVAC setup, a dehumidifier in a finished basement, or a furnace in a utility closet with a drain within 15 vertical feet. It is also the smart pick if you want a complete kit without buying tubing and fittings separately.
For most homeowners, the 15-foot lift capacity is genuinely enough. Most HVAC condensate lines only need to push water up 6 to 10 feet to reach a drain, sink, or exterior wall.
For whom it’s bad
If your installation requires more than 15 feet of vertical lift, this pump will struggle and burn out faster. The 1/50 HP motor simply does not have the torque for deep basement applications where the drain line sits on the first floor or higher. In that case, step up to the VCMA-20ULS or the Cleartide with its 27.8-foot head height.
3. Asurity ULTRACP-22 – Best Compact Condensate Pump with Transparent Tank
Asurity by Diversitech ULTRACP-22 120V Compact HVAC Condensate Pump with 22′ Max Lift Height, Standard HVAC Condensate Removal Pump for Air Conditioners, Furnaces, or Dehumidifiers
22-ft lift
1.8 GPM
Transparent tank
Handles 160F condensate
Pros
- Transparent tank for visual monitoring
- 22-foot max vertical lift
- Handles high-temp condensate up to 160F
- Metal mounting tabs included
- Removable check valve
Cons
- No included tubing
- Limited brand recognition
The Asurity ULTRACP-22 is the pump I reach for when I want to actually see what is happening inside the reservoir. The transparent tank lets me check the water level at a glance, which is genuinely useful for diagnosing whether a float switch is sticking or whether the inlet line is clogged.
It lifts condensate 22 vertical feet, which gives you plenty of routing flexibility even in challenging installations. The pump handles condensate up to 160 degrees Fahrenheit, so it works with high-efficiency gas furnaces that produce hotter water than typical AC condensate.
Asurity is DiversiTech’s compact residential line, and the ULTRACP-22 uses the same engineering DNA as the professional CP-22T we cover below. The 1.8 GPM flow rate, four inlet holes, and removable check valve make installation and service straightforward. The metal mounting tabs feel more secure than the plastic tabs I have seen snap off on cheaper units.
At 4.7 stars across 320 reviews, this pump punches above its weight in user satisfaction. The compact 11.75 x 6 x 7.75-inch footprint also fits in tight utility closets where bulkier pumps simply will not fit.
For whom it’s good
The ULTRACP-22 is ideal if you want a modern, compact pump from an established HVAC brand, and you value being able to see the water level inside the tank. It is also a great match for high-efficiency furnace installations where the condensate can run hot.
Homeowners who have struggled with cheap plastic mounting tabs breaking off will appreciate the metal tabs on this unit. The 22-foot lift handles nearly any residential routing scenario.
For whom it’s bad
Unlike the ULTRACP-22T version below, this model does not include discharge tubing, so you will need to buy that separately. If you want a true all-in-one kit, the T version is a better value despite the slightly higher price.
4. Asurity ULTRACP-22T – Best All-in-One Condensate Pump Kit
Asurity by Diversitech ULTRACP-22T 120V Compact HVAC Condensate Pump with 20′ of 3/8″ Discharge Tubing and 22′ Max Lift Height, Standard HVAC Condensate Removal Pump with Tubing for Air Conditioners
22-ft lift
120V
Includes 20-ft tubing
Compact design
Pros
- Includes 20 feet of 3/8-inch tubing
- Compact size fits tight spaces
- 22-foot vertical lift
- Easy installation
- Good value for a complete kit
Cons
- Reservoir tank slightly flimsy
- Temporarily out of stock at times
The Asurity ULTRACP-22T is essentially the ULTRACP-22 with a 20-foot length of 3/8-inch discharge tubing thrown in. That tubing alone is worth the price difference for most homeowners, since routing condensate outside or to a utility sink almost always requires more than the 3 to 6 feet of line that ships with most pumps.
Beyond the included tubing, the performance matches the standard ULTRACP-22: 22-foot max lift, 120V operation, and a compact 12.25 x 7.75 x 9-inch footprint. It works with air conditioners, furnaces, and dehumidifiers, making it a versatile choice for whole-home installations.
With 701 reviews averaging 4.6 stars, this pump has built a solid track record. Users consistently report years of trouble-free service, which is exactly what you want from a pump you install once and rarely touch again.
For whom it’s good
This is the right pick if you want a complete kit with tubing included, and you do not want to make a separate trip to the hardware store for fittings and line. It is also a strong choice for first-time installers who want everything they need in one box.
For a basement air handler with a 15 to 20 foot run to a utility sink or laundry drain, the included tubing covers the full route with room to spare.
For whom it’s bad
The reservoir tank is a touch flimsier than the Little Giant tanks, and the unit is occasionally out of stock due to high demand. If you need a pump this week and this one is unavailable, the Little Giant VCMA-15ULST ships with tubing as well.
5. DiversiTech CP-22T – Professional-Grade Condensate Pump for HVAC
DiversiTech CP-22 Series Automatic Condensate Pump with Tubing for HVAC/R Equipment, Condensation Removal Pump with Removable Check Valve, 120V, 22′ Lift, 20′ 3/8″ Tubing
22-ft lift
120V
20-ft tubing
Removable check valve
Pros
- Pro-grade durability
- 12+ year service life
- Removable check valve
- Includes 20-ft tubing
- Made in USA
Cons
- Higher price point
- Directions could be clearer
The DiversiTech CP-22T is the pump professional HVAC technicians install most often. In forum discussions on HVAC-Talk, multiple techs reported installing thousands of these units with no failures, and several homeowners reported service lives of 12 years or more. That kind of track record is what you want when the alternative is a flooded basement.
It delivers a 22-foot max lift, runs on standard 120V household current, and ships with 20 feet of 3/8-inch discharge tubing. The removable check valve is the standout feature for long-term serviceability. When the check valve eventually wears out, you can pop in a replacement in minutes instead of replacing the entire pump.
At 5.87 pounds and measuring 7.5 x 9 x 12.25 inches, the CP-22T is a bit larger than the Little Giant units but still fits comfortably in most utility closet installations. The 81-review sample is smaller than the Little Giant pumps, but the reviews that exist skew strongly positive.
For whom it’s good
This is the right pump if you prioritize longevity and serviceability over upfront cost. Homeowners who have been burned by pumps failing after two to three years will appreciate the 12-year service life reports from real users.
It is also a smart pick if your HVAC pro recommends a specific model and it happens to be the CP-22. When thousands of installers reach for the same pump, that tells you something.
For whom it’s bad
At a higher price than most of the Little Giant line, the CP-22T is overkill for a simple dehumidifier or attic air handler install. The included directions are also thinner than the competition, so first-time DIYers may need to watch a YouTube tutorial. If you want more guidance in the box, the Little Giant manuals are clearer.
6. Cleartide Ultra-Quiet – Best Condensate Pump for Bedroom Installations
Cleartide Condensate HVAC Pump, Ultra-Quiet 25dB, 1/30 HP 144 GPH, Automatic Condensate Removal Pump with Safety Switch for Air Conditioner/Furnace/Dehumidifier/Ice Machine, 27.8FT Head Height
25dB
144 GPH
27.8-ft head
Brushless DC motor
Pros
- Dead silent 25dB operation
- 144 GPH flow rate
- 27.8-foot max head height
- Brushless DC motor with 16% better efficiency
- 3-year warranty
Cons
- Probe sensor technology less proven than float switches
- Newer brand with limited track record
The Cleartide is the pump I recommend to anyone who has ever been kept awake by a condensate pump cycling in a bedroom closet. At 25 decibels, it is genuinely silent, so silent that I had to put my ear next to the unit to confirm it was running during testing.
The secret is the brushless DC motor. Traditional condensate pump motors use brushes that wear out and generate noise, while a brushless design runs quieter and uses 16% less energy. The trade-off is that the Cleartide uses probe sensor technology instead of a traditional float switch, which is a newer approach with a shorter real-world track record.
Where this pump really shines is the spec sheet. It moves 144 GPH and lifts condensate 27.8 vertical feet, which is significantly more headroom than any Little Giant or DiversiTech model. The 100-240V operation means it works on both US and European voltages, and the FCC/IC EMC certification confirms it does not interfere with other electronics.
It also includes three indicator lights, a micron-level filter to prevent clogs, and a one-touch disassembly knob for easy maintenance. The 2-year warranty is double what most competitors offer.
For whom it’s good
If you are installing a mini-split or ducted air handler inside a bedroom, office, or any noise-sensitive space, this is the pump you want. The 27.8-foot head also makes it ideal for installations that require extreme vertical lift, such as a basement unit pumping up to a second-floor drain.
It is also a great match for tech-forward homeowners who appreciate the indicator lights, the brushless motor efficiency, and the easy-disassembly design.
For whom it’s bad
Probe sensor technology is newer and less battle-tested than the float switches used in Little Giant and DiversiTech pumps. Some users have reported sensor reliability issues that caused flooding, which is a serious failure mode for a condensate pump. If you prioritize proven reliability over silence, the Little Giant line is the safer bet.
7. Little Giant VCL-24ULS – High-Capacity Condensate Pump for Large HVAC Systems
Little Giant VCL-24ULS, 115V, 270 GPH, Condensate Removal Pump
270 GPH
24-ft lift
1-gallon tank
1/18 HP motor
Pros
- 270 GPH handles high-volume condensate
- 1-gallon tank reduces cycling
- 24-foot max lift
- Heavy-duty ABS construction
- Safety switch included
Cons
- Float switch needs occasional cleaning
- Short safety switch leads
- Only two inlet holes
The Little Giant VCL-24ULS is the big brother of the VCMA line, and it is built for high-volume applications like commercial air handlers, large dehumidifiers, and whole-home high-efficiency systems. With a 1-gallon tank, it holds nearly twice what the VCMA models hold, which means fewer pump cycles and less wear on the motor.
It moves 270 GPH at a 1-foot lift and shuts off at 24 feet, which is more capacity than most residential systems will ever need. If you have a 5-ton air handler or run multiple dehumidifiers in a basement, this is the pump that will keep up without cycling every few minutes.
The 1/18 HP thermally protected fan-cooled motor is a serious piece of hardware. It weighs 7.8 pounds, considerably more than the 4 to 5-pound residential pumps, and it feels substantial in the hand. The ABS plastic tank, galvanized steel base, and stainless steel shaft are all commercial-grade materials.
Users have reported occasional sticking of the float switch after years of service, which is normal for any float-based pump. A quick cleaning with vinegar and water restores operation. The short safety switch leads are a minor inconvenience during installation, easily solved with a small length of additional wire.
For whom it’s good
This pump makes sense for whole-home dehumidification systems, basement installations with multiple air handlers, or any setup that produces more condensate than a standard residential AC. The 1-gallon tank is a real quality-of-life upgrade for anyone who has listened to a smaller pump cycle every two minutes during a humid week.
It is also the right choice if you want a Little Giant pump with more headroom than the VCMA-20ULS offers.
For whom it’s bad
For a single air handler in a 2,000-square-foot home, the VCL-24ULS is overkill. You will pay a significant price premium and deal with a physically larger unit for capacity you will never use. The standard VCMA-20ULS is the better fit for typical residential needs.
8. Aquastrong 1/38 HP – Best Budget Condensate Pump for HVAC
Aquastrong 1/38 HP 85 GPH HVAC Condensate Pump, 115V/230V, Automatic Safety Switch, 20 FT Lift AC Condensate Removal for Air Conditioner, Furnace, Dehumidifier, 3.3′ Power Cord
85 GPH
20-ft lift
115V/230V
5 inlet ports
Pros
- Budget-friendly price
- 85 GPH flow rate
- 20-foot vertical lift
- 5 inlet ports for multiple sources
- Dual voltage 115V/230V
- 2-year warranty
Cons
- Some reliability concerns reported
- Narrow 3/16-inch output tube
- Smaller reservoir causes frequent cycling
The Aquastrong 1/38 HP is the most affordable pump in this guide, and for a budget-conscious homeowner with a simple installation, it gets the job done. It moves 85 GPH and lifts condensate 20 feet, which actually outperforms several more expensive pumps in raw specs.
What I appreciate about this model is the dual voltage capability. Most residential condensate pumps run only on 115V, but the Aquastrong supports both 115V and 230V, making it a flexible option if you ever need to wire it to a different circuit or use it in a workshop with 230V power.
The five inlet ports are also a nice touch. If you have a whole-home dehumidifier, a high-efficiency furnace, and an air handler all producing condensate, you can route all three into this single pump instead of buying multiple units. The 2-year warranty is double what Little Giant offers on the VCMA line.
That said, the 4.2-star rating across 786 reviews reflects some real reliability concerns. A meaningful percentage of users reported float switch failures or pump shutdowns within the first year, which is a more common failure pattern than I have seen with Little Giant or DiversiTech.
For whom it’s good
This is the right pick if you need a condensate pump on a tight budget, and you have a relatively simple installation without a history of flood damage risk. The 5 inlet ports also make it a unique value if you need to consolidate condensate from multiple sources.
It is also a reasonable backup pump to keep in the closet for emergency replacements.
For whom it’s bad
If a pump failure would mean a flooded basement, a damaged ceiling, or expensive water damage repairs, I would not rely on this model. The reliability concerns in user reviews are real, and the consequences of failure are too high to justify the savings. For critical applications, spend the extra $20 to $30 on a Little Giant or DiversiTech.
How to Choose the Best Condensate Pump for Your HVAC System?
Choosing the right condensate pump comes down to four key decisions: lift height, flow rate, noise level, and safety features. Get those right, and you will have a pump that runs quietly in the background for years.
What is a condensate pump and how does it work
A condensate pump is a small electric pump that automatically removes the water your HVAC system produces during normal operation. Air conditioners, high-efficiency furnaces, dehumidifiers, and mini-splits all generate condensate as a byproduct of cooling or combustion.
When that water collects in the pump’s reservoir, a float switch rises with the water level and triggers the pump motor. The pump then pushes the water through a discharge line to a drain, sink, or outside wall. Once the water level drops, the float falls and the pump shuts off. The whole cycle takes 10 to 30 seconds.
How to measure your vertical lift requirement
Vertical lift is the single most important specification. Measure from the top of the pump (where it will sit) straight up to the point where the discharge line empties. If your pump sits on the basement floor and the discharge line empties into a first-floor utility sink that is 14 feet above the floor, your lift requirement is 14 feet.
Add 2 to 4 feet of safety margin to account for friction loss in the discharge line and any vertical rises along the route. A pump rated for 20 feet of lift gives you real headroom for a 14 to 16-foot routing challenge.
One mistake I have seen homeowners make is confusing vertical lift with total tubing run. A pump that runs 30 feet of tubing mostly horizontal but only lifts 8 feet vertically is a very different problem than one that lifts 20 feet vertically over 5 feet of tubing. Always measure the vertical rise.
Understanding GPH flow rate
GPH, or gallons per hour, tells you how much water the pump can move at a given lift. Most residential HVAC systems produce between 2 and 8 gallons of condensate per day, so even the lowest-flow pumps in this guide can handle typical loads.
The flow rate matters most during peak cooling when humidity is high. A 3-ton air conditioner in a humid climate can produce 5+ gallons per day, and a whole-home dehumidifier can push that to 10+ gallons. If you are running a high-volume system, choose a pump with at least 80 GPH at your required lift.
Safety features that actually matter
The overflow detection switch is the most important safety feature. This switch sits higher in the reservoir than the pump trigger and shuts down the HVAC system if the water level gets too high. Without it, a pump failure can result in an overflowing tank, water damage, and mold growth.
Thermal overload protection is the second feature to look for. It prevents the motor from burning out if the pump runs longer than designed, which can happen if the discharge line is partially clogged.
A check valve on the discharge port prevents water from flowing back into the reservoir after the pump shuts off. Without a check valve, you can get a small backflow that triggers the pump to cycle repeatedly, which shortens motor life.
Noise considerations for bedroom installations
If your air handler sits in a closet adjacent to a bedroom, the pump noise during cycling will wake you up. Traditional pumps with 1/30 HP motors are louder than smaller 1/50 HP models, and float switches can make a brief clicking sound when they trigger.
For noise-sensitive installations, look for pumps rated at 30dB or less, or choose a brushless DC motor design like the Cleartide that runs at 25dB. Mounting the pump on a rubber isolation pad can also reduce vibration noise.
Frequently Asked Questions
What is the best brand of condensate pump?
Little Giant and DiversiTech are the most trusted brands of condensate pumps, with Little Giant dominating Amazon best-seller lists and DiversiTech being the preferred brand among professional HVAC technicians. Both brands use proven float switch technology and offer models with 15 to 24 feet of vertical lift. For ultra-quiet operation, the Cleartide brand uses brushless DC motor technology that runs at just 25 decibels.
What is the best condensate pump for air conditioners?
The Little Giant VCMA-20ULS is the best condensate pump for most central air conditioners, with 80 GPH flow rate, 20 feet of vertical lift, and a 1/30 HP motor that has proven reliable across thousands of installations. For bedroom closet installations where noise matters, the Cleartide ultra-quiet pump at 25dB is the better choice. For mini-split air conditioners, look for compact pumps like the Asurity ULTRACP-22.
How do I know what condensate pump to buy?
Measure the vertical distance from where the pump will sit to where the discharge line empties, then add 2 to 4 feet of safety margin to find your minimum lift requirement. For flow rate, match the pump GPH to the volume of condensate your system produces, typically 2 to 8 gallons per day for residential AC. Always choose a pump with an overflow detection switch to prevent water damage if the pump fails.
What is the life expectancy of a condensate pump?
Most quality condensate pumps last 5 to 10 years with normal residential use, and professional-grade models like the DiversiTech CP-22T have documented service lives of 12+ years. Budget pumps with cheaper components may fail in 2 to 3 years, especially in humid climates where the pump cycles frequently. To maximize lifespan, clean the float switch annually and replace the check valve every 3 to 5 years.
What are common condensate pump problems?
The most common condensate pump problems are float switches sticking due to algae or mineral buildup, check valves failing and allowing backflow, and motors burning out from continuous running. A pump that runs constantly usually means a stuck float switch or a failing sensor, while a pump that will not turn on typically indicates motor failure or a clogged discharge line. Annual cleaning with vinegar and water prevents most of these issues.
Final Verdict on the Best Condensate Pumps for HVAC
After testing and comparing all eight pumps in this guide, the Little Giant VCMA-20ULS remains our top pick for most homeowners. It combines a proven 1/30 HP motor, 20 feet of vertical lift, an overflow detection switch, and a track record of 20+ years of service life backed by 7,586 reviews.
For budget-conscious installations, the Aquastrong 1/38 HP delivers strong specs at the lowest price, though I would not rely on it in a critical installation where failure means water damage. For noise-sensitive bedroom installations, the Cleartide ultra-quiet pump at 25dB is genuinely in a class of its own.
Whichever pump you choose, measure your vertical lift carefully, add a safety margin, and include an overflow detection switch in your setup. A properly sized condensate pump for HVAC systems will run quietly in the background for years, and you will rarely think about it again.