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Best heating and air conditioning pros near San Leandro, CA

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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 Smart Heating and Air Conditioning, Inc.
Smart Heating and Air Conditioning, Inc.
5.0(
23
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallHeat Pump - Install or Replace+9 more

Serving San Leandro, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Smart Heating and Air Conditioning was the most professional, friendly, and knowledgeable company I’ve worked with. From our first contact, we felt like we were working with family. Our furnace went out and the techs and installers were all so amazing with keeping us all informed, especially Susie who works in the office. But what really showed me how great this company was, is that they saw our handle to our screen door wasn’t functioning and they were so kind to offer to fix the issue. They fixed it in 5 mins. You don’t see this type of generosity anymore, so we appreciate that! Our furnace and air were replaced for a great price and we couldn’t be happier. I would highly recommend this company for your heating and conditioning needs!"
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+27

Response time1 day
28 neighbors recently requested a quote
Recommended by52%of homeowners
Avatar for Elite Heating and Air LLC
Elite Heating and Air LLC
5.0(
25
)
Central A/C - InstallHeat Pump - Install or ReplaceCentral A/C - Service or Repair+7 more

Serving San Leandro, CA and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Santiago was great to work with and done an amazing job installing a new heat pump system. Honest and competitive pricing, very clean job and took care of hauling the old system away as well. 100% recommended for all your HVAC needs."
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+14

Response time6 hrs
Response rate99%
26 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

21 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
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Heating and Air Conditioning FAQs, answered by experts

You can buy R-22 refrigerant for your home air-conditioning system through your local AC repair specialist, who can also refill your R-22 system as needed. You may find that the cost of R-22 has gone up due to shortages as the EPA banned this refrigerant. Ask your pro to inspect your system for any leaks or issues.

No, for two very important reasons. First, it’s illegal to release refrigerant into the air or ground since it can be toxic and cause environmental damage. Technicians typically pump old or extra refrigerant into separate tanks for special disposal. Second, without professional equipment to read refrigerant pressure and levels, plus the AC’s suggested requirements, it’s impossible to know if you’ve removed the right amount of refrigerant. Stay away from a DIY solution here and seek an expert with the right tools.

Professional HVAC installation requires licensed expertise in several areas, including electrical- and plumbing-related work. An HVAC team must know how to safely handle regulated refrigerant chemicals and the gas, oil, or propane used in furnaces and boilers. A proper HVAC installation protects your home from energy loss, fires, and even carbon monoxide leaks.

No, it's not safe to keep using your unit when it's frozen. Not only can running a frozen unit lead to damage, but it can also potentially overheat, making it a fire hazard. Therefore, it's always best to turn off the AC unit as soon as you notice any ice.

There are several steps you can take to prevent your AC drain from clogging. This includes cleaning the drain line at least every three months, changing the filter every one to three months, and getting your AC serviced annually. Also, if any problems arise with your AC, hire an HVAC technician to deal with them ASAP.

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.