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Find Air conditioning pros in San Marcos

Avatar for Airmerica Air Conditioning & Heating
Airmerica Air Conditioning & Heating
5.0(
34
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2019

Free estimates

Emergency services offered

"Very professional. Really well priced. The owner Ryan does all the work himself with his team. He double, triple, and keeps checking that the air conditioning system is up and running perfectly. He doesn't overcharge. He takes his time until the job is completed to satisfaction. I would highly recommend his services."
Ultra Lo NOx 80% furnace and coil with Air-Wave air cleaner and 2" media filter
Outdoor unit feeding (5) indoor wall mounts
Heating & A/C Project
Single stage 14.3seer2 AC condenser
Outdoor unit feeding (5) indoor wall mounts with electrical ran by us from panel.

+6

Response time8 hrs
Response rate100%
29 neighbors recently requested a quote
Avatar for AireCare Heating and Air
AireCare Heating and Air
5.0(
39
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"My wife and I were throughly impressed with the professionalism of the company and their installation crew. They were meticulous in their work practices and went out of their way to keep us informed of the status of our air conditioning project from planning to completion. It was truly a pleasure dealing with such an honest and ethical HVAC contractor. Michael Santana, along with his talented team of Enrique and Raul more than exceeded our expectations with their outstanding work and customer service. We solicited quotes from numerous contractors and Aire Care Heating and Air Conditioning hands down provided the best cost and installation proposal. If you are looking to replace your HVAC system, I highly recommend that you contact them."
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System
San Marcos Full System

+8

Response time6 hrs
Response rate93%
52 neighbors recently requested a quote
AirMaxx, Inc.
4.4(
662
)
Central A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 1995

Free estimates

Credit card accepted

"Air Maxx is a professional company, who first visited to understand my needs and offered options. They arrived on time and completed the installation and instructions in a timely efficient manner. The two men who provided the service were friendly and informative."
Airmaxx
Airmaxx
Response time6 hrs
2 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Airtime Plumbing Heating & Air
Airtime Plumbing Heating & Air
4.8(
29
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+12 more

Serving San Marcos, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2005

Free estimates

Emergency services offered

"⭐⭐⭐⭐⭐ Exceptional Service from Airtime Plumbing, Heating, & Air! I cannot recommend Airtime Plumbing, Heating, & Air highly enough! From the initial service call to the completion of the job, my experience was absolutely five-star. We had an urgent issue with our furnace acting up just as the cold weather hit, and they responded with incredible speed and professionalism. The technician David arrived promptly, was extremely courteous, and clearly explained what was wrong with our unit. He didn't just fix the problem; he took the time to show me what maintenance steps I could take to keep the system running efficiently. What Made Them Stand Out: Punctuality & Communication: They called ahead, arrived exactly when they said they would, and kept me informed throughout the process. Expert Knowledge: The diagnosis was fast and accurate. They fixed the problem right the first time. Fair Pricing: The final cost was competitive and exactly what was quoted, with no hidden fees or upselling. Cle"
tankless water heater
Chacon house
Chacon house
Chacon house
Additional Photos

+55

Response time9 hrs
Response rate100%
90 neighbors recently requested a quote
Avatar for All Day Heating And Air Conditioning
All Day Heating And Air Conditioning
5.0(
16
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+12 more

Serving San Marcos, CA and surrounding areas

Approved

In business since 2010

Credit card accepted

Customers say: True professional

"Josh was able to help us out less than 24 hours after I called. We had no AC and it was very hot in our home. He called ahead of his scheduled visit and was able to arrive earlier. He was very efficient, knowledgeable and friendly. We discussed future work replacing equipment and will definitely contact Josh to do the job."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+14

Response time4 hrs
Recommended by100%of homeowners
Avatar for Oasis Plumbing, Heating & Air Conditioning
Oasis Plumbing, Heating & Air Conditioning
5.0(
13
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Install - For Business

Serving San Marcos, CA and surrounding areas

Approved

In business since 2022

Free estimates

Warranties offered

"Michael, James, Keith were all GREAT! I received about 5 estimates for replacing an original 32 year old split level Rheem system. Oasis was neither the least expensive but certainly not the most expensive. They have only been in business a short while but I took a chance with them and they delivered! Prompt, flexible pricing, clean work, friendly. A complete system including duct work and I hardly even knew they were here working. I whole heartedly recommend these guys! (And I do not write reviews!)"
AC Condenser
New Home Furnace
AC Replacement
AC Installation
Furnace Installation

+6

Response time7 hrs
Response rate96%
9 neighbors recently requested a quote
Avatar for Heating and Air 365
Heating and Air 365
5.0(
21
)
Central A/C - InstallCentral A/C - Service or Repair

Serving San Marcos, CA and surrounding areas

Approved

In business since 2021

Free estimates

Emergency services offered

"Tom (owner) is very honest and professional. He came by the very next day and on time. I knew the problem with my gas furnace and communicated it to him. He went right to verify it and fixed it. No beating around the bush or fixing (or even suggesting to fix) things that are not broken. Above all, very honest and reasonable in his fees. I'd highly recommend him to my friends and anyone needing HVAC service/repairs."
New HVAC system!
New HVAC system!
Old vs New coil
Big Bear Mini Split
Mercury Thermostat

+9

Response time1 day
Response rate86%
4 neighbors recently requested a quote
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FAQs for air conditioning projects in San Marcos, CA

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 San Marcos, CA homeowners’ guide to air conditioning services

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