Comfort, efficiency, and energy savings are yours.

Plus up to $6,500 in PG&E home upgrade rebates!

Call us to learn more.

Schedule Service

Get Started

We’re Open for Business!

However, during the current COVID-19 restrictions, we have limited preventive maintenance appointments available so that we can instead dispatch technicians to repair/replace failed systems. We anticipate (with a positive attitude!) that we will be able to increase capacity as soon as possible.

The Good News! We have the capacity and are accepting same-day and next-day appointments for trouble calls to repair or replace furnaces, air conditioners and water heaters. We have technicians standing by to help you with any problems. Call to schedule if you need help.

Sincerely,

The Greiner Team

Our Special Process During the COVID-19 Pandemic

When you invite friends and family to your home, you want it to feel comfortable for them. When you bring us to your home for heating and air conditioning service, we want you to feel comfortable! That's why Greiner Heating and Air Conditioning has focused for decades on a professional, relationship-building approach to our work.

What you get with Greiner Heating and Air Conditioning:

100% focus on residential work
Complete honesty in all phases of the job
The region's best Energy-Saving Heating and Air Conditioning installations
The region's top Home Energy Upgrade California participant
Efficiency with your investment
Happy employees and technicians who make your life easy

If you're looking for installation or service for your home, look no further – call us today!

NOW HIRING:

SERVICE TECH

(Entry Level & Experienced)

Home Upgrade CA

Specials & Rebates

Heating & Air

Solar Energy

Tankless Hot Water Heater

Home Energy Upgrade

What Our Customers are Saying

Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Very friendly, professional service from start to finish!
Comfort Advisor: Danny
Installers: Ruben, Bobby & Jairo

Mike E, Vacaville
Would you recommend Greiner Heating & Air?
Definitely!!
Please tell us why?

Nancy H, Davis
Would you recommend Greiner Heating & Air?
Absolutely
Please tell us why?
Professional and thorough.
Comfort Advisor: Nathan
Installers: Miguel, Dylan & Jairo

Natalie M, Davis
Would you recommend Greiner Heating & Air?
Absolutely! No hesitation!
Please tell us why?

Judy S, Vacaville
Would you recommend Greiner Heating & Air?
Absolutely!!
Please tell us why?

Richard N, Vacaville
Would you recommend Greiner Heating & Air?
Yes – and already have
Please tell us why?

Phil & Kathy C., Davis
Would you recommend Greiner Heating & Air?
May 16, 2013
We recently received your survey regarding your service, asking if we would recommend Greiner, and why.

Manuel & Diane L., Vacaville
Would you recommend Greiner Heating & Air?
Without reservation
Please tell us why?

Sandy R, Vacaville
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Nathan & Justin are great to work with! They explained everything in great detail and the installation was excellent.
Thanks again,

Tim & Diane H., Vacaville
Would you recommend Greiner Heating & Air?
Yes.
Please tell us why?
Outstanding service at all levels:

Mark & Rena D., Davis
Would you recommend Greiner Heating & Air?
Absolutely!
Please tell us why?

Al & Susan B., Vacaville
Would you recommend Greiner Heating & Air?
Yes! To everyone!
Please tell us why?

Paul & Joan D., Vacaville
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?

Dennis & Sue B, Vacaville
Good people. Good service. Good products.

John. A, Sacramento, CA
The quality of a new heating and air conditioning system is not based on the equipment that comes inside of the cardboard boxes - it is based on the people who sell it, install it and service it. So there is no higher quality system than the one that comes from Greiner.

Stacy W., Davis, CA
The workers did a very good job. Alex handled everything from beginning to the end very professionally.

Thank you

George W., Fairfield, CA
All the men were professionals. They were polite, efficient and friendly.
P.S. thanks roger for the gift coupon (Starbucks).

Martha Y., Davis, CA
You have great employees - they're friendly and genuine and knowledgeable. That fact that they have great camaraderie and like working for Greiner says a lot. I also appreciate the honesty and forthrightness displayed without being pressure to buy "up" or beyond what was reasonable/expected.

Wendy S., Woodland, CA
Great service and competitive prices. Thanks for the Starbucks card. We are warm and toasty with our new heating system.

Phil + Henriette S., Davis, CA
Excellent customer service
Excellent product and workmanship

Paul J., Davis, CA
You are dependable, on time, and extremely fun.

Vic and Penny H., Fairfield, CA
No surprises! All of your people were courteous and efficient. We have used Greiner in the past and will recommend you/

John C., Fairfield, CA
Courteous and professional workers and staff.

Paula and Lawrence B., Vacaville, CA
Greiner gave me excellent service, were efficient and did a great job. They worked until the job was completed and left my house as they found it!

Susan B., Fairfield, CA
Would you recommend Greiner Heating & Air?
Absolutely, so enthusiastic
Please tell us why?

Gina D. & Bill W., Davis El Macero, CA
Would you recommend Greiner Heating & Air?
Yes! 100& Yes and I always do!
Please tell us why?
Professional, quality, friendly, promot, and you have integrity!
Design Specialist: Jacob

James & Lucinda C., Davis, CA
Would you recommend Greiner Heating & Air?
Absolutely!
Please tell us why?
Everyone who came to the house was very courteous, polite, and professional. They did a fantastic job getting everything installed in a timely manner. Thank you!

Sandy S., Davis, CA
Would you recommend Greiner Heating & Air?
Yes!
Please tell us why?

Denise P., Davis, ca
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?

Lois H., Dixon, CA
Would you recommend Greiner Heating & Air?
Definitely!!
Please tell us why?

Anita G., Vacaville, CA
Would you recommend Greiner Heating & Air?
Yes!
Please tell us why?

Katherine C., Vacaville, CA
Would you recommend Greiner Heating & Air?
Absolutely! 100%
Please tell us why?
Would you recommend Greiner Heating & Air?
Definitely
Please tell us why?
Because everyone there is nice and helpful. There is no pressure to buy anything. They tell you upfront if there is a problem with your equipment.
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
The whole team was very friendly, professional, and knowledgeable.
Would you recommend Greiner Heating & Air?
Definitely
Please tell us why?
The staff is very professional and courteous. Throughout the process, we had different people come to fix the issue and we didn't have a problem at all.
Would you recommend Greiner Heating & Air?
Absolutely!
Please tell us why?
We have been dealing with Greiner for at least 15 years, when we replaced the heating and air in our 1927 home.
Would you recommend Greiner Heating & Air?
Yes!
Please tell us why?
The technicians arrived on time, were professional and left no trace after they left.
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Everything is handled professionally, from the first phone inquiry to the cleaning following the work.
"Quality is remembered long after price is forgot."
Would you recommend Greiner Heating & AIr?
Yes, I do.
Please tell us why?
Would you recommend Greiner Heating & AIr?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes.
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes. (Thank you for your kind note with the gift certificate!)
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
With gusto-absolutely.
Please tell us why?
Very professional company, well-managed. Employees work as a team and they are well trained.
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Make everything easy on the customer. Professional installers, very nice staff.
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes Yes!
Please tell us why?
Rick is a super guy and his crew of installers was so good that I felt like nominating them for an award for some kind! Follow-up by Rick was great too.
Would you recommend Greiner Heating & Air?
Yes, always (and scold when they don't)
Please tell us why?
Completely reliable, trustworthy, dependable. Professional conscientious. Thank you!
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Local company
Excellent reputation
Qualified technicians
Our experience with Greiner Heating & Air has met above & beyond needs.
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes!
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes, we would gladly recommend Greiner!
Please tell us why?
Would you recommend Greiner Heating & Air?
Absolutely!
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes
Please tell us why?
Would you recommend Greiner Heating & Air?
Yes. The service was exceptional!
Please tell us why?

Are Tankless Water Heaters Efficient?

Is your failing water heater struggling to keep up with your family’s showering schedule? Learn how an on demand tankless water heater installed by Greiner can provide efficient hot water for your Davis, Dixon, or Vacaville, CA home for decades. Schedule professional tankless water heater installation with Greiner.

Understanding Your Ventilation System

View as a downloadable PDF version.The “V” in HVAC stands for ventilation—one of the most important systems in your home. With the right ventilation and ductwork design, heated and cooled air will be... Read more