Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Knightsen, CA

Enter your zip and get matched with up to 5 pros

Need a pro for your heating and air conditioning service project in Knightsen, CA?

Select your specific project to find the pro for you.

TRUSTED BY KNIGHTSEN, CA HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon247
    Verified heating and air conditioning services reviews

Find Heating and air conditioning pros in Knightsen

Avatar for Smart Heating and Air Conditioning, Inc.
Smart Heating and Air Conditioning, Inc.
5.0(
16
)

Serving Knightsen, CA and surrounding areas

Approved

Super Service Award Winner

In business since 2021

Free estimates

Emergency services offered

"Smart Heating and Air Conditioning was very responsive and came out when we really needed them. We were without heat as our old furnace no longer worked and our AC was on its last leg. Mike came out to give us a quote which was the best out of three that we had. He went over all options with us and now we are very satisfied to have a new and efficient heating and AC system. They lived up to their name as well, by upgrading my thermostat to a WiFi one that added that SMART touch to my system."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+27

34 neighbors recently requested a quote
Recommended by78%of homeowners
Avatar for Albert Nahman Plumbing, Heating, and Cooling
Albert Nahman Plumbing, Heating, and Cooling
4.4(
719
)

Serving Knightsen, CA and surrounding areas

Approved (Corporate)

In business since 1981

Free estimates

Warranties offered

"The crew from Albert Nahman did a great job from start to finish. The project was to replace the original ductwork in our 60 year old house. Tom provided excellent advice for the estimate then Bryan’s crew did the job, 2 days, within a week of my acceptance of the proposal. Great work."
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

55 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for Tyndall HVAC Inc.
Tyndall HVAC Inc.
4.4(
23
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2004

Free estimates

Warranties offered

"They showed up early, he had the part on his truck he replaced the device in HVAC unit and had me up and running in no time. He was very nice, very kind and very polite."
Peter Tyndall (Owner)
Our Trucks
New unit Installed
Additional Photos
Additional Photos

+5

14 neighbors recently requested a quote
Recommended by80%of homeowners
Avatar for Tyndall HVAC, Inc.
Tyndall HVAC, Inc.
4.2(
108
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2003

Free estimates

Credit card accepted

"Truthfully, we had angst about calling for service because of past experience with other HVAC vendors. They always said the same thing, our system is "old" and we need a new one. Very expensive! We called for service, not a hard sell! Hence, we never used the same one twice. However, Tyndall gave me the impression, whether right or wrong, that they would be less likely to do this so I decided to try them. They kept me informed of their arrival status, since they squeezed me in at the end of their work day the same day I called. So, communicative and accommodating! After running several tests, they determined it was an electrical problem and nothing to do with the unit itself. They also said our unit doesn't need replacing - that's a first! They didn't do any unnecessary service or repair to run up the bill or even try to convince us it was needed. We were only charged the minimum fee as quoted. We were able to repair our air conditioning without the "hard-sell angst". So, thorough and honest! Unlike the other HVAC vendors we've used, we definitely will call them if we need service again!"
Response time1 day
18 neighbors recently requested a quote
Recommended by93%of homeowners
Avatar for Guerrero's Heating & Air Conditioning
Guerrero's Heating & Air Conditioning
4.7(
61
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2011

Free estimates

Emergency services offered

"Outstanding customer service. Checked everything out and insured all components working normally. If you are looking for a honest HVAC technician, this is the company to go with."
Response time2 hrs
Response rate86%
12 neighbors recently requested a quote
Avatar for Ramirez Duct Cleaning
Ramirez Duct Cleaning
4.8(
91
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2020

Free estimates

Emergency services offered

"Antonio did a fantastic job. He cleaned every HVAC vent and ducting, the dryer vent and replaced the ducting between the dryer and the wall connection, all bathroom exhaust vents and the furnace blower and exchanger. Super clean. I was amazed on how much crud cam our of our systems. Excellent attention to details."
Response time6 hrs
4 neighbors recently requested a quote
Recommended by97%of homeowners
Avatar for S.C. Home Repair
S.C. Home Repair
4.8(
40
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2009

Free estimates

Emergency services offered

"Josh did a thoroughly excellent job replacing the flooring in my rental unit. His attention to detail was spectacular, and the floor is meticulously and beautifully installed. He did what he said he'd do, stayed within the estimate, and did just fantastic work."
Handyman Services Project
Kitchen Floor, cabinets appliances.
Carpentry, handrails and decks.
Widened closet opening and replaced doors. Added trim around windows and new Luxury Vinyl Plank flooring
Remodeling - General Project

+136

Recommended by91%of homeowners
Jim's Air Systems
4.5(
11
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 1978

Free estimates

Warranties offered

"Jim's Air Systems had the best value for my dollar. They supplied me with better equipment than they quoted for the same price. They completed the entire installation in about five hours. They protected my floors with tarps and were very careful to protect my walls as they moved equipment in and out. Josh, the son of the original Jim, was on the job working with the other two installers. They performed above my expectations. They left my home and yard as clean as if they had never been there. The new furnace is wonderful and is already saving me money on my P.G. & E. bill. I would recommend Jim's Air Systems unconditionally to anyone in need of a new furnace and AC system. This is a family business that has been supplying and installing systems since 1976. They take personal pride in doing an excellent job. They did not sell me anything that I did not need and provided me with a much cleaner and easier-to-service installation than my existing system. They are the best!"
87 neighbors recently requested a quote
Recommended by63%of homeowners
Avatar for Comfort Home Heating & Air
Comfort Home Heating & Air
5.0(
2
)

Serving Knightsen, CA and surrounding areas

Approved

In business since 2024

Free estimates

Emergency services offered

"Juan and his team were top tier professional. From the initial consultation to the hvac installation, they handled everything with care. Juan was so thorough answering my questions, the install was done in time, and everything was to spec. When I contacted him with an issue after install, him and his business partner came to take care of things immediately. I wouldn’t hesitate to recommend them in a heartbeat. So grateful for the work they did with removing our furnace and installing a split unit heat pump. Thank you Juan!"
10 neighbors recently requested a quote
Recommended by50%of homeowners
...
Showing 1-10 of 388
Heating and Air Conditioning questions, answered by experts

It is normal for the attic to be hotter than the rest of the house in the summer, but only by about 10 or 20 degrees. Attics that aren’t properly insulated or ventilated can reach temperatures of 130 degrees or more which can cause damage to the home’s structure, including the roof, wood framing, and HVAC system.

If you’re shopping around for a rooftop AC unit, you may hear them referred to as “package units.” That’s because rooftop AC systems are all-in-one heating and cooling units that connect directly to your home’s ductwork. If your AC repair pro references a package unit, they are referring to the system on your roof.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

A new HVAC system can increase your home's value by about 5% to 7%, which can translate to an added value of $2,500 to $3,000. The return on investment (ROI) can be around 30%, especially if you upgrade the entire system, including ductwork and insulation. Adding modern features like a smart thermostat can further increase your home’s value by making the heating and cooling systems more efficient and convenient. However, since a new unit can cost $10,000 or more to install, it's important to weigh the upfront cost against the potential increase in home value. For a specific assessment, it's best to consult a local AC installer.

Choosing between a ductless mini-split and central AC depends on your specific needs. Ductless mini-splits are ideal for targeted cooling, providing zoned comfort and energy efficiency. They are perfect for smaller spaces or homes lacking ductwork. In contrast, central AC offers consistent cooling throughout the entire house but requires ductwork and may be less energy-efficient for smaller spaces. 

Consider factors like budget, home size, and cooling preferences to make the right choice. Combining both systems, with a ductless mini-split in specific areas, can also be a viable solution for tailored comfort and overall efficiency.

The Knightsen, 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.