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TRUSTED BY HILMAR, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon84
    Verified heating and air conditioning services reviews

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

Avatar for Calor Air HVAC
Calor Air HVAC
5.0(
21
)
Central A/C - Service or RepairCentral A/C - InstallCentral Air Cleaner - Repair or Service+16 more

Serving Hilmar, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Costa takes pride in his work and did an excellent job of installing my microwave. He is very good at recognizing an issue and being able to improvise. I would strong recommend Costa for any handyman job around a home. I will definitely hire Costa again."
AC PM Service
HVAC PM Service
HVAC PM Service
AC Gauges
Before and after

+15

Response time7 hrs
5 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Cosmic Comfort
Cosmic Comfort
4.8(
97
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+4 more

Serving Hilmar, CA and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

Cosmic Comfort is a locally owned HVAC, electrical and solar company serving the Central Valley since 2015, from Modesto and Turlock to Merced, Atwater and Fresno. Our licensed team (CA C-10 and C-20, #1015082) handles AC and furnace repair and replacement, heat pumps, panel upgrades, rewires, EV chargers and solar with batteries. We're Tesla Certified for chargers and Powerwall. You get upfront pricing before any work starts, free estimates, flexible financing options and same-day service most weekdays. Every repair comes with a 1-year labor warranty, and every install with a 2-year labor warranty. You can reach us 24/7 to schedule. Join Cosmic Care for year-round maintenance and priority service.

Rooftop crane lift
Subpanel wiring
Team with van
Condenser and van
Rooftop wiring

+8

23 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Central Valley Air Conditioning
Central Valley Air Conditioning
4.6(
9
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+5 more

Serving Hilmar, CA and surrounding areas

Approved

In business since 2004

Free estimates

Credit card accepted

"I purchased a new home and the AC was not working when we moved in. Unfortunately, the builder couldn't help the same-day so we contacted Central Valley Air. They came right away, fixed the problem and ensured our move-in process was cool/ comfortable. Couldn't thank them enough and would highly recommend them to anyone. Happy Customer!!! Don't hesitate.... Call them :)"
Residential Changeout
New Unit
 Mini Split Install
 Mini Split Install
AC Tune up

+6

6 neighbors recently requested a quote
Avatar for United Heating and Air
United Heating and Air
5.0(
4
)
Central Air Cleaner - Repair or Service

Serving Hilmar, CA and surrounding areas

Approved

Hi, I’m Jeromy, owner of United Heating & Air.\nI started this company with one goal—do the job right and treat people the way I’d want my own family treated. Around here, you’re not just another call on the schedule. I take pride in being honest about what you actually need, and delivering clean, professional work every time.

LITT HEATING AND AIR CONDITIONING
5.0(
13
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+1 more

Serving Hilmar, CA and surrounding areas

Approved

In business since 2020

Free estimates

Offers commercial services

"I had such a great experience with LITT Heating and Air. He was extremely professional from start to finish and did an amazing job fixing my AC unit. He explained everything clearly, worked efficiently, and made sure everything was running perfectly before he left. I highly recommend him for anyone needing reliable and top-quality service."
AC Starter Kit
Response time8 hrs
Response rate100%
Recommended by45%of homeowners
Avatar for ACM Dryervent Care & more
ACM Dryervent Care & more
5.0(
2
)
Air Ducts & Vents - Clean

Serving Hilmar, CA and surrounding areas

Approved

Free estimates

Emergency services offered

Warranties offered

ACM Dryer-Vent Care & More is a local air duct and dryer vent cleaning service based in Hollister, CA. The company is led by technicians with over 3 years of experience and focuses on improving home safety and appliance efficiency by reducing fire hazards and energy costs.

1 neighbors recently requested a quote
Sergio’s HVAC services
New to Angi
Central Air Cleaner - Repair or Service

Serving Hilmar, CA and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Offers commercial services

Hi, my name is Sergio, owner of Sergio’s HVAC Services. I’ve been working in the HVAC industry since 2019 and specialize in HVAC repairs, maintenance, and full system installations. I earned my HVAC certification along with my EPA 608 Universal Certification, allowing me to professionally service all types of heating and cooling systems.\n\nI take pride in providing honest, reliable, and quality work to make sure every customer stays comfortable year-round. Whether you need a repair, replacement, or new installation, I’m here to help with all your HVAC needs

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Heating and Air Conditioning FAQs, answered by experts

If possible, avoid placing furniture in front of a return air vent. A blocked air vent can cause your HVAC system to use more energy, which in turn can lower the life span of your unit and raise your energy bill. Furniture can also trap hot or cold air, damaging your furniture or appliances. 

Professional duct installers suggest leaving between six and 12 inches of space in front of an air return vent. If you must place furniture in front of a return air vent, try to aim for putting furniture over a floor vent instead of in front of a wall vent, and avoid draping curtains over any vent system.

High humidity, bad insulation, warmth from sunlight, and poor circulation are all reasons your home’s hotter inside than out. While this is what you want in the colder months, summer can become unbearable if this is a constant. Try to find the cause, but you need to remember that issues like this require a permanent fix (unless you want to bear down during the summer months).

Troubleshooting common issues with your AC often sheds light on a problem with the compressor. Signs that you need to replace a bad compressor include your AC blowing warm air, short cycling (turning on and off), making strange noises, and blowing less air overall. Since these problems can stem from several areas of your AC, always call a local AC repair team to confirm it's the compressor.

The American Society of Heating, Refrigerating, and Air-Conditioning Engineers, or ASHRAE, sets the standard guidelines for air changes per hour in homes and businesses. The International Residential Code, or IRC, also sets ACH requirements for residences and bases those requirements off of ASHRAE standards plus climate specifics related to your location.

The decision to put your AC unit on the roof or ground depends on the climate in your area, the roof shape, accessibility, and budget. If you live in a warm climate or don’t have existing ductwork, it’s likely best to stick to a traditional AC unit that sits on the ground. However, if you lack yard space, live in a mild climate, and have easy access to the roof, your home may benefit from a rooftop AC unit. 

The Hilmar, CA 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.