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TRUSTED BY NEW BERLIN, WI HOMEOWNERS

  • Average homeowner rating star icon4.7
    Average homeowner rating
  • Verified reviews icon1.1k+
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in New Berlin - Updated Nov 2026

Avatar for Droegkamp Furnace Co
Droegkamp Furnace Co
4.8(
575
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallGas Furnace / Forced Air Heating System - Repair+27 more

Serving New Berlin, WI and surrounding areas

Approved

In business since 1877

Free estimates

Emergency services offered

"Two visits and that's not our fault: Brian came, diagnosed the problem (capacitor if not blower died, and tune up). He was right: a new capacitor made it work well, until the old blower just refused to obey. Two days later we called and said that Brian was right: the blower needed replacement. Doing just the capacitor was our call to try to save money. Now our 20+ year old furnace runs like new. And I'll be calling them to replace our HVAC ('cuz it's 20+ years old) when it decides to give up the ghost."
Response time1 day
Response rate99%
13 neighbors recently requested a quote
Burant Heating And Air Conditioning
4.5(
15
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+47 more

Serving New Berlin, WI and surrounding areas

Approved

In business since 1997

Free estimates

Emergency services offered

"Swimmingly. I interviewed quite a number of HVAC companies for this job by sending out an RPF (Request for Proposal), and Bob Mamayek was unquestionably the most thorough in his on-site evaluation. Installation crew was fantastic. This is a small shop, and it was a true pleasure to have a team of regular guys just getting the job done. I recommend them without reservation. I almost gave them a B for responsiveness because Bob doesn't do a lot of email, but I realized while typing that this would be completely unfair, for two reasons. A) Bob might not respond to email with email, but he did always respond with a phone call. Frankly, that is better on many counts. B) This ignores the amazing response to my RPF, which was both timely and thorough. So, really, this says more about my email-centric life than Mamayek's responsiveness."
Response time1 day
Response rate100%
3 neighbors recently requested a quote
Avatar for Southport Plumbing, Heating & Cooling
Southport Plumbing, Heating & Cooling
5.0(
14
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or Replace+7 more

Serving New Berlin, WI and surrounding areas

Approved

In business since 2005

Free estimates

Warranties offered

At Southport Plumbing, Heating & Cooling we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the #1 medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.

Air Conditioner
Furnace System
Outdoor Heat Pump
Garage Heat Pump
Furnace Install

+2

18 neighbors recently requested a quote
Avatar for Guardian Heating and Cooling, LLC
Guardian Heating and Cooling, LLC
4.7(
82
)
Gas Boiler or Radiator Heating System - InstallRadiant Floor Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving New Berlin, WI and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Professional, polite and friendly, Steve offered the best deal in town on a a new furnace. He answered all my questions regarding the work before installation. The work was scheduled and completed on time and Steve stayed until he answered all remaining questions I had regarding my new furnace. I heartily recommend his HVAC services to other members!"
Boilers
Boilers
Boilers
Garage infloor
Sun Room

+4

Response time7 hrs
13 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for ThermaTek Heating and Air
ThermaTek Heating and Air
4.7(
345
)
Central A/C - Service or RepairGas Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair+1 more

Serving New Berlin, WI and surrounding areas

Approved

Super Service Award Winner

In business since 2018

Free estimates

Emergency services offered

"Jeremy was outstanding! He replied within five minutes to an Angie post and was at my house an hour later to evaluate my HVAC. We quickly realize that our equipment was end of life and proposed a combination, air conditioner and furnace with a discount. We approved two days ago and he and his team Completed the installation today. Highly recommend Jeremy and Keith for their outstanding service."
Ac install
Ac install
Ac install
Ac install
Ac install

+16

Response time3 hrs
Response rate91%
17 neighbors recently requested a quote
Nova Heating and Cooling
5.0(
8
)
Central A/C - InstallCentral A/C - Service or RepairDucts & Vents - Install or Replace+17 more

Serving New Berlin, WI and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"Marty listened to my needs, inspected the existing systems and provided a fair quote. I met the installation team as they took a close look at the project -- they knew their stuff. I wanted to hire Fast Air but my house is not a standard type of house and the brand of furnace I wanted didn't come in the right size for the house. Marty talked this through with me so I understood the situation. That helped me tremendously when I talked with other HVAC contractors. Fast Air is a professional outfit. They absolutely are at the top of my short list."
Response time40 mins
Recommended by83%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

Yes, you can build a deck over your outdoor HVAC unit, but you need to leave at least 5 feet of vertical clearance above the unit. If you don’t want your deck to be that high off the ground, you could build a floating deck in another part of your yard—again, as long as you leave at least 4 feet of horizontal space between the deck and your AC unit.

Window AC units use a fair amount of electricity, but significantly less than central AC systems. Because they are more energy-efficient for cooling individual rooms or small spaces, their usage is comparatively low. On average, a window AC unit consumes between 500 and 1,400 watts, while a central AC system uses over 3,500 watts—meaning a window unit uses about one-third of the energy. This typically translates to a monthly running cost of $15 to $40, although this can vary depending on external factors.

There are several AC unit problems to troubleshoot, but luckily you can identify them by keeping a close eye on your system. Look out for the following signs that your AC needs repair:

  • Unusual noises during operation

  • AC unit blows warm air

  • AC unit doesn’t come on or turn off with temperature changes

  • Strange odors come through the vents

  • AC unit cycles on and off rapidly

  • Indoor air is more humid or less comfortable than usual

  • AC unit keeps tripping your breaker

  • Fan in the outdoor compressor doesn’t operate when the AC is on

If you don't clean your AC evaporator coils, dirt and debris will build up, which impairs the system's ability to transfer heat. This forces the unit to work harder, leading to inefficient performance, higher energy bills, and frequent breakdowns. Over time, neglected coils can corrode, which may cause refrigerant leaks, or develop mold, ice buildup, and a clogged condensate drain, resulting in poor air quality and an uncomfortable home.

Here’s how AC professionals will clean your AC coils:

  1. Unplug the AC unit or turn off the breaker to the unit in your circuit breaker box.

  2. Remove the faceplate.

  3. Spray a vacuum hose attachment or compressed air can to remove debris, dust, dirt, and grime.

  4. Use a soft-bristled fin comb to remove stubborn caked-on debris.

  5. Use the vacuum hose to suck up any extra debris.

  6. Take a coil-safe cleaning solution and spray it onto the coils. Try to choose a no-rinse solution.

  7. Let the solution sit for at least 15 minutes.

  8. Gently wipe away loosened grime and debris with a microfiber cloth.

  9. Reattach the faceplate, plug in your AC system, or turn the breaker back on.

The New Berlin, WI homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.