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Find Air conditioning pros in Covina

Avatar for Global Green Solutions
Global Green Solutions
5.0(
248
)

Serving Covina, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Excellent heating and air conditioning repair, replacement, and new installation services! Everything went smoothly and without incident from beginning to end. Before departing, they made sure the system was operating flawlessly, responded quickly, and worked effectively. Excellent service?I heartily recommend them!"
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+24

Response time3 days
11 neighbors recently requested a quote
Recommended by7%of homeowners
Avatar for Air-Tech Air Conditioning & Heating Inc
Air-Tech Air Conditioning & Heating Inc
4.5(
202
)

Serving Covina, CA and surrounding areas

Approved

In business since 1988

Free estimates

Warranties offered

"My interaction with Air-Tech went very smoothy. Alex Fish, the customer representative was very professional and easy to work with. He provided a clear and detailed proposal , with options, before leaving the site on his first visit. Alex stayed in communication throughout the project. As a result of this experience I plan to have Air-Tech take over the maintenance on my main HVAC system."
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+8

Response time2 hrs
44 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Trabuco Air
Trabuco Air
4.6(
130
)

Serving Covina, CA and surrounding areas

Approved

In business since 1996

Free estimates

Emergency services offered

"Bill Walker is the tech that diagnosed my faulty condensing unit compressor to be grounded. Sounds like a good thing right? but its not. You never want to hear that. Should you ever do so you want Trabuco Air handling it. I was explained what was wrong and given options that i could comfortably choose from without just breaking the the already shaking bank. Trustworthy and reliable Bill is a cool cat and confident in his skill set. He knows air conditioning extensively and will solve your needs as well. I can finally enjoy the upstairs again thanks to Bill from Trabucco Air."
Response time5 hrs
Recommended by94%of homeowners
Avatar for Trinity Heating and AC
Trinity Heating and AC
5.0(
10
)

Serving Covina, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Chris analyzed my entire AC and heating system and explained in detail the pros and cons of performing additional maintenance. I greatly appreciated his description of future potential issues and his recommendations on how to mitigate them. Thank you Chris."
After: brand new furnace with industrial grade filtration system. Re-wrapped ductwork with fiberglass free wrapping and acoustic soundproof closet/return cavity.
After: 2 Stage Variable Speed Furnace installed perfectly!
After: Properly sized, energy efficient, and installed to code.
Before: Homeowner had tried multiple times to get the pilot light ignited.
Before: Old furnace not installed to code.

+31

3 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for RS Air Conditioning & Heating
RS Air Conditioning & Heating
4.9(
23
)

Serving Covina, CA and surrounding areas

Approved

In business since 1990

Free estimates

Emergency services offered

"I am so pleased with Ray and his work. The floor furnace is back in working condition, better than ever, especially when other's said it could not be fixed. Basically wanting to up sale rather than repair. Ray is very knowledgeable and knows what he is doing. Thank you Ray!"
New Outdoor Install
Furnace Install
Satisfied Client
Energy saver!
Carrier Water Soure

+2

Response time3 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for All City Plumbing, Air & Electrical
All City Plumbing, Air & Electrical
4.9(
270
)

Serving Covina, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2009

Emergency services offered

Warranties offered

"Tyler Jones from All City Plumbing Air and Electrical did a great job replacing a gas valve in our garage. He was friendly and easy to engage with, clearly knowledgeable, and took the time to explain what he was doing. The work was completed efficiently and effectively, and everything was handled professionally from start to finish. I’d definitely recommend Tyler and All City for plumbing and gas-related work."
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+42

Response time10 mins
16 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for Temp Air System, Inc.
Temp Air System, Inc.
4.8(
54
)

Serving Covina, CA and surrounding areas

Approved

In business since 2002

Free estimates

Credit card accepted

"We had Temp Air install our AC unit. The best decision we ever made. They were fast, reliable and dependable. Excellent customer service, did a phenomenal job. After a couple of years something was going on with our unit, I called them and immediately they send out a technician Juan, who was phenomenal. He explained what the issue was and resolved it asap! Highly recommend this company!"
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation
Mini Split Installation

+14

Response time10 hrs
Response rate99%
4 neighbors recently requested a quote
Avatar for Top Energy Solutions, Inc.
Top Energy Solutions, Inc.
4.9(
62
)

Serving Covina, CA and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

"I highly recommend Top Energy Solutions. During the heat wave my air conditioning system blew out hot air. I expected to wait days for a technician to come out. Leor sent one the next morning. The technician quickly located the problem and fixed it within minutes. Their employees are professional, courteous and very knowledgeable."
Roof Replacement  - Owens Corning Shingle Roof
New Windows Installation in Hollywood
5 Ton Furnace Replacement
Attic insulation
New Mini Split - Daikin Emura

+87

Response time1 day
Response rate98%
5 neighbors recently requested a quote
Avatar for Penguin Heating and Air Inc
Penguin Heating and Air Inc
5.0(
14
)

Serving Covina, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2025

Free estimates

Emergency services offered

"I highly recommend this company. Penguin heating & Air was very quick to respond to my request, fast text reply, sent them pics, they replied with a quote, which was way lower than anyone else on this site, or even our regular guy that we normally use, we scheduled an appointment for the very next day, which was today, he also finished the job the same day! David did a very good job, very professional. Despite a terrible rainy day, he got the job done. When he was done he walked me through with exactly what he did. He also quoted me for a service on an existing unit and his quote was almost $200 less than what our regular guy charges us... We will absolutely be using this company again."
Diamond Bar
Diamond Bar
Diamond Bar
Furnace Install
AC Condenser

+6

Response time2 hrs
Response rate100%
25 neighbors recently requested a quote
Avatar for SERVLEGACY COOLING AND HEATING
SERVLEGACY COOLING AND HEATING
5.0(
20
)

Serving Covina, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"We recently had our air conditioning system replaced by SERVLegacy and the whole experience was excellent from start to finish. The team was professional, respectful, and took the time to explain everything clearly without trying to pressure us into anything. The installation went smoothly, they arrived on time, kept the work area clean, and made sure everything was running properly before leaving. You can tell they really care about the quality of their work and customer service. The new system has been working great and the house feels much more comfortable already. It’s hard to find companies that are reliable and honest nowadays, but SERVLegacy definitely exceeded our expectations. Highly recommend them to anyone looking for AC replacement or HVAC work."
After
Before and After
Before
Before
After

+3

Response time12 hrs
7 neighbors recently requested a quote
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FAQs for air conditioning projects in Covina, 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 Covina, CA homeowners’ guide to air conditioning services

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