Top-rated air conditioning pros.

Get matched with top air conditioning pros in Watertown, WI

Enter your zip and get matched with up to 3 pros

Matching on HomeAdvisor

Share some details icon
Share some details about your home project.
Match with local pros icon
Within moments, match with highly-rated local pros.
Compare quotes icon
Compare quotes and choose the best pro for the job.

Find Air conditioning pros in Watertown

Avatar for Cardinal Heating & Air Conditioning
Cardinal Heating & Air Conditioning
4.8(
164
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+2 more

Serving Watertown, WI and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"This was my first time using Cardinal Heating & Air Conditioning, and it was a fantastic experience. I received a phone call asking me if I wanted to schedule my annual air conditioning check, and when I said yes, the scheduler informed me that she could have a technician come out that day. The technician arrived within a couple of hours and did a thorough check. Everything checked out, and I am ready for the hot summer months."
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air
Cardinal Heating & Air

+15

183 neighbors recently requested a quote
Recommended by91%of homeowners
Avatar for JB Mechanical, LLC
JB Mechanical, LLC
4.9(
30
)
Central A/C - Service or RepairCentral A/C - InstallCentral Humidifier - Install or Replace+10 more

Serving Watertown, WI and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"My furnace quit during single digit temps. I talked to the owner at 9:00 am and he was at my house to give me an estimate before 10 am (the morning after a snow storm). My new furnace was up and running before noon the very next day. The techs were great - knowledgeable, courteous and even wiped up water the spots their boots left on my floor! I highly recommend JB Mechanical!"
Response time2 days
17 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Southport Home Services
Southport Home Services
5.0(
11
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+4 more

Serving Watertown, WI and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

At Southport Home Services 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.

Boiler
Upstairs Furnace
Lineset/Electrical
Basement Furnace
Air Conditioner

+11

21 neighbors recently requested a quote
Avatar for Countryside Heating and Cooling, LLC
Countryside Heating and Cooling, LLC
5.0(
7
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+4 more

Serving Watertown, WI and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Shane was able to schedule a prompt appointment. He arrived on time and performed a thorough diagnostic on the furnace. He identified an issue I was unaware of and corrected the problem with the air conditioner using parts that were still under warranty. I will gladly use his services again."
Heating the Dream Barn
Heating the Dream Barn
Heating the Dream Barn
2024 Nextdoor Fave Award
2024 Nextdoor Fave Award

+2

Response time1 day
4 neighbors recently requested a quote
Avatar for Over the Moon Heating, Air & Electric
Over the Moon Heating, Air & Electric
3.6(
15
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Install or Replace+2 more

Serving Watertown, WI and surrounding areas

Approved

In business since 2009

Emergency services offered

Warranties offered

"I cannot say enough about our technician, Jordan, or the service of In Phase. We put our request into Angi and probably 1 minute later In Phase called. We have been wanting to upgrade our house to Ecobee since we purchased it two years ago. We thought we could do it ourselves, but our home had 3 zones, a two-wire boiler, and a newly added Central Air system. I had tried to hire other companies to do the job in the past, but very few companies were familiar with Ecobees. When In Phase called they were confident in the Ecobee system and were able to get us in the next day. Jordan showed up on time and was very personable and knowledgeable about the system. He had everything up and running in about 2.5 hours. This easily saved my husband and I a weekend of working on this, not to mention the fact that I didn't have to hear any cursing. (LOL!) BTW...we had already purchased everything, Jordan installed it and got it all set up for us. Many thanks!"
Team & Job Photos
Team & Job Photos
Team & Job Photos
Team & Job Photos
Team & Job Photos

+51

Response time4 hrs
73 neighbors recently requested a quote
Recommended by54%of homeowners
Avatar for Harker Heating & Cooling
Harker Heating & Cooling
4.6(
213
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+14 more

Serving Watertown, WI and surrounding areas

In business since 1949

Free estimates

Emergency services offered

"Harker replaced our 30-year-old furnace and 20-year-old air conditioner. Excellent experience all around. We obtained estimates from four local HVAC contractors, and Harker not only put in the most competitive bid (i.e., least expensive), they were also the most motivated to earn our business. We first worked with Grant, who assessed our needs and wrote the estimate. We appreciated that he did not simply try to sell us on the latest and greatest product; he actually listened to what our needs were and wrote the bid accordingly. He followed up after a couple of days to see if we had any concerns and ask if there was anything else he could offer to earn our business. None of the other contractors did that. On the day of the installation, the crew arrived on time, performed a quick assessment to make sure there wouldn't be any surprises (there weren't), and got to work. In addition to installing the furnace and A/C units, they installed new venting for the furnace and a new chimney liner for our water heater. They worked efficiently and kept our house clean. They were also friendly and courteous. Everything went smoothly. Nearly a couple of months have passed since the installation, and we've had no issues. Obviously, we haven't been able to use the A/C yet, but we're confident that all will be well when the time comes. All in all, we were very happy we went with Harker and would recommend them to anyone.
"
87 W. Beltline Hwy
Carrier Distinguished Dealer Logo
Star of Madison Award
Recommended by89%of homeowners
...
Showing 1-10 of 74

FAQs for air conditioning projects in Watertown, WI

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Watertown, WI homeowners’ guide to air conditioning services

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