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TRUSTED BY SAN LEANDRO, CA HOMEOWNERS

  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon146
    Verified heating and air conditioning services reviews

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

Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
4.8(
135
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+47 more

Serving San Leandro, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Great. They contacted me right away. It wasn't an emergency but Iti was cold, so they still came first thing on the first business day. The technician explained what he was doing and why the prior repair done by somebody else probably failed. The rate was reasonable. It's been a couple of days and it seems the furnace is working, so everything good so far."
Heat Pump Repairs & Installations
Central Air Cut-Ins
Electric Furnace Repairs & Installations
Response time1 day
Response rate100%
32 neighbors recently requested a quote
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
722
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallElectric Furnace / Forced Air Heating System - Install+27 more

Serving San Leandro, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"Albert Nahman PHC installed new AC and Furnace for my house. I like them for several reasons -- 1. At first Tom explained in detail what equipment I need and how they work, and gave me a reasonable and detailed quote at end of the visit. 2. They offer interest free finance. 3. I got free upgrade for furnace when the original quoted is not available. 4. Their installer did good job, and cleaned up afterward. I highly recommend this company."
Living room Mini-Split
Aquasana home Filtration
Almost no disturbance at EBMUD meter
Navien with filtration to protect the heat exchanger
New house valve and Pressure Reducing Valve

+73

Response time8 hrs
Response rate100%
44 neighbors recently requested a quote
Avatar for Galaxy Heating & Air Conditioning
Galaxy Heating & Air Conditioning
4.9(
8
)
Gas Furnace / Forced Air Heating System - Repair

Serving San Leandro, CA and surrounding areas

Approved

In business since 2015

Free estimates

Warranties offered

Galaxy Heating & Air Conditioning is a locally owned HVAC company proudly serving homeowners and businesses across the San Francisco Bay Area. We specialize in energy-efficient heating and cooling installations, heat pumps, furnace replacements, ductless systems, and indoor air quality upgrades. As authorized dealers for leading brands like Mitsubishi, American Standard, Carrier, Lennox, and Rheem, we deliver expert craftsmanship backed by manufacturer warranties.\n\nOur certified technicians handle every project with professionalism, from design and permits to testing and safety inspections, ensuring each system is code-compliant and built to last. Whether you need a seasonal tune-up, emergency repair, or complete comfort system upgrade, Galaxy provides honest service, transparent pricing, and dependable results.\n\nServing Pleasant Hill, Concord, Walnut Creek, Danville, Alamo, Oakland, Berkeley, Lafayette, Moraga, and nearby cities.

Heat Pump
Mitsubishi heat pump
Furnace Installation
Mitsubishi Ducted HVAC
Mitsubishi HVAC

+3

18 neighbors recently requested a quote
Recommended by28%of homeowners
Avatar for New Millennium HVAC Cleaning Services
New Millennium HVAC Cleaning Services
5.0(
7
)
Air Ducts & Vents - Clean

Serving San Leandro, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"These guys are just excellent! I made a few mistakes before I got lucky to find New Millennium HVAC. They were professional from the beginning to the end. Jose did a thorough job, cleaning the dryer vent. It was not a straightforward issue and I was afraid that we’d have to open the wall to cure the blockage. However, Jose was able to fix it. He’s an experienced professional excellent at his job, trustworthy and overall great to deal with. I’m a happy customer for years now and will rely on these guys for any HVAC related issues."
Response time4 hrs
Response rate97%
1 neighbors recently requested a quote
Avatar for Chill Heating & Cooling
Chill Heating & Cooling
4.3(
20
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+2 more

Serving San Leandro, CA and surrounding areas

Approved

In business since 2019

Free estimates

Emergency services offered

"Almost a week ago, our 14yr. old fridge finally gave out and stopped cooling and freezing. We had to toss most our food, and we could not get a refrigerator repair technician until Dec. 20th. Who came to our rescue? Chill HVAC & Refrigeration. I called the office on Dec. 12th and the same day Kevin showed up and diagnosed the problem. After getting the necessary parts, he was back to the house on Dec.14 putting in a whole day of work removing all the worn our parts and replacing them in our large side by side fridge. Now with this new total parts replacement, you can say that we have a brand new refrigerator. Thank you, Kevin for the amazing proficient work. Thank you, Chill HVAC&Refrigeration for having such dedicated professionals. Next time something breaks, we know whom we will be calling."
New Split System
Place for AC
NEW AC Condenser
OLD AC Condenser
NEW AC Condenser

+4

Response time2 hrs
Response rate100%
Recommended by40%of homeowners
Avatar for Service KA
Service KA
4.4(
26
)
Central A/C - InstallCentral A/C - Service or RepairGas Furnace / Forced Air Heating System - Install+3 more

Serving San Leandro, CA and surrounding areas

Approved

In business since 2022

Free estimates

Emergency services offered

"George is very good and knowledgeable HVAC Man. He informed me what the problems were, what parts were needed and how much it would cost. I got quote from another HVAC repair that was very expensive. I was very happy with Service King Air, I felt confident hiring them. I will use a service King Air again. Good people are usually busy, so schedule ing was challenging. I am very happy and highly recommend this company."
Ac installation
Ac replacement
Yogasix
Yogasix
Yogasix

+8

Response time8 hrs
Response rate100%
6 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

The cost of R32 refrigerant is about the same as the cost of R410A refrigerant, the most widely available type of refrigerant today. However, R32 systems use about 20% less refrigerant than R410A systems, making the refrigerant less expensive overall.

The cost to replace an AC evaporator coil is typically between $600 and $2,500, with an average cost around $1,300 to $1,350. The price of the coil itself can range from $550 to $1,100, depending on the brand, size, and style, with professional labor adding around $700. Replacing a condenser coil is generally less expensive, costing about $800. Because this repair involves handling refrigerants, it requires a licensed AC professional. Regular inspections, which cost between $200 and $600, can help prevent costly coil replacements.

Water buildup in your HVAC system is a cause for alarm. If water accumulates in your ductwork, it can drastically lower your home's air quality and create safety hazards. These risks include mold growth, damage to your HVAC system, and attracting pests that are seeking water into your ducts. Proper insulation and sealing of ducts can prevent this, and regular inspection and maintenance can address water damage problems before they become too severe.

Yes, a dirty air filter can cause a higher electric bill. That’s because clogged filters make it harder for air to flow through your HVAC system, which forces it to work harder and use more energy. According to the U.S. Department of Energy, replacing dirty filters can save you between 5% and 15% in utility costs.

A common HVAC rule is that for every 500 to 600 square feet of living space, you need 1 ton of heating or cooling capacity. Now that you know this common rule, you also need to know that it isn’t very accurate, and a dedicated pro wouldn’t use it for your home. If you talk to a pro who won’t or can’t perform a proper Manual J calculation, consider hiring someone more thorough.

The San Leandro, 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.