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TRUSTED BY DELHI, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon81
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Delhi - 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 Delhi, 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
4 neighbors recently requested a quote
Recommended by73%of homeowners
Avatar for Cosmic Comfort
Cosmic Comfort
4.8(
97
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+4 more

Serving Delhi, 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

29 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for The Air Doctor Heating & Air
The Air Doctor Heating & Air
4.8(
34
)
Central A/C - Service or RepairDuctless Mini-split A/C - Install or ReplaceDuctless Mini-split Heating System - Install or Replace+5 more

Serving Delhi, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Sam is amazing!!! He did an awesome job. He was on time and he explained everything he was doing. He works evenings so I didn't have to take time off of work to get my AC fixed. He had my AC working in no time. The Air Doctor Heating and Air is highly recommended and I will be calling Sam with all my HVAC needs."
Response time7 hrs
1 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Central Valley Air Conditioning
Central Valley Air Conditioning
4.8(
17
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+5 more

Serving Delhi, 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

13 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 Delhi, 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 Delhi, 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
Sergio’s HVAC services
New to Angi
Central Air Cleaner - Repair or Service

Serving Delhi, 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

Most HVAC service calls include diagnostic fees, which could include checking on a specific issue you’re experiencing or running through a routine inspection checklist. If you called for a particular problem, the service call will also include an estimate to fix the issue, including materials and labor. Depending on your HVAC technician and the service you requested, you might also get a general inspection of your system components to ensure everything is working as intended.

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.

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

An undersized whole-house generator has the potential to overheat and shut down when you try to run a central AC system. This scenario can not only damage the whole-house generator, but can also trip your home’s breakers or cause electrical damage. To avoid this situation, hire a local generator installer to correctly size your whole-house generator.

Signs that your A/C system needs professional service include increased energy bills, uneven or poor cooling, loud or unusual noises, and frequent cycling.

The Delhi, 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.