Get matched with top furnace / forced air heating system pros in Sacramento, CA

"They did a great job, and they were able to fix the problem on our air conditioning."

"Very quick response time. Flexible scheduling. Professional, courteous, and affordable. I appreciate that they actually repaired my A/C and didn't try to sell me a new unit. I would use them again."

"They installed central heating and air in our home in 2025. They were efficient, did a excellent clean up, and friendly. They checked in a week after to make sure we were satisfied with the system and if we had any questions. We are extremely satisfied with the new system. The controls are easy to work and the system is very quiet and efficient."

"Garrett and team were excellent, they provided top professional service at a reasonable price. I am very happy with my new furnace and the whole installation process. Highly recommend!"

"They had a good program for heating and A/C like for $100 they come out and check in the fall to make sure the heating is running right and again in the spring to make sure the A/C is working right. They did their job. It was cheaper than anyone else and I got 2 services. The only thing they could do better is give me free heating and air conditioning."

"Definitely my go to company when it comes to my Heating and Air Conditioner! With this heat and my unit going out they came in a fast and timely manner and got straight to work! They knew exactly what they were doing and fixed my AC. Very professional and courteous!! I will definitely recommend to anyone i know and will be calling them for any future issues!"

"The technicians that came to install our HVAC system were super friendly and accommodating to my many requests about locations of the furnace, vent pipes, the condenser wiring, piping, and the condenser itself. When I asked for a 90 degree boot feeding two registers so the piping could stay high, a technician made a run to a store and found them. I want to give a shout out to Danny Aguilar who installed the furnace with Edgar and Victor. Grant Duran with Jose and Richard did an amazing job installing the vent pipes. Finally Adolph Garcia with Gabriel and later several other technicians I previously mentioned all worked to install the AC system (condenser and its plumbing + electrical). They worked late into the day to complete the job. I was very demanding in where I wanted things installed and requested changes on a regular basis but in all cases I was accommodated."

"Air conditioning in one zone stopped working over very hot weekend.  Called three companies to get a quote on possibly replacing both zones before I spent money on repairing a 17+ year old unit.
Diamond was the first company with availability.  Before they came over to give a quote, Bob called to ask me a few questions about the nature of the problem.  He speculated over the phone of what the problem might be and what the cost of fixing it would be.
He arrived for the appointment at the appointed time and proceeded immediately to fix the unit while talking to me about an estimate to replace both zones (2 systems).  He spent extra time hunting down an electrical connection issue in the unit and when done, checked out the flow readings of the system.
$258 dollars fixed the problem.  Since I had scheduled him for a quote, he offered to remove the new part that he had just installed or I could leave it in and if I decided to buy a new system, they would credit the repair of this unit back against it.  I elected to have him leave the fix in place.
Bob quoted me an exceptionally good price per unit for a quality Lennox system.  In fact a competitor who came the following day said that he wanted to see a copy of a written quote because Diamond's price was too good.
Although I've decided for the time being to not replace both systems, I would select Diamond Heating and Air in a second!
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"I scheduled an air conditioner tune-up with Roy O. Cook and Sonny came out on the scheduled date and time. He did a thorough job of testing the compressor, cleaning the coils and measuring the air flow. I have a 4-ton unit and his meter showed my a/c unit was only performing at about 2.5 tons. After cleaning the coils and making adjustments, he was able to increase the efficiency to 3.7 tons. This is a significant improvement which equates to my a/c unit performing better when the hot weather eventually kicks in. Roseville Electric currently has a program that provides a $75 rebate towards a comprehensive tune-up. Sonny did an outstanding job and I'll definitely hire them again."

"Bon was very helpful and luckily had an opening for my HVAC unit during a crazy heat wave when all of the other big companies flaked on me or didn't have openings for weeks. My unit wasn't pumping out cool air and it was 90 degrees in my house during the heat wave. His prices and services were very reasonable. He gave me a free estimate by checking my vents and my unit. Luckily I just ran out of refrigerant and he was able to refill it when he found out I had very low levels. He noticed the builders who installed the unit was lazy and didn't waterproof the wiring correctly so he found a pool of water collecting in the sleeve holding the wires. He waterproofed it for a cheap price. Thank you for saving the day Bon!"