5040 Commercial Circle, Unit C
Concord, CA 94520
(925) 438-8367

Have any feedback for us? We'd love to hear it! Call us at (925) 326-6232 and let us know how we are doing.


Local Reviews
for alamo, ca

Rated 5.0 out of 5 stars based on 3 customer reviews

Quick, easy, friendly

Diego is always fast, efficient, clear in his communication/recommendations and importantly, pleasant to have in our home!

  • Overall Experience
  • Quality
  • Price
  • Convenience

Excellent service!

Really great service as always. Great comms. Clean. Considerate if not disturbing people in the house


Response from Certified Heating and Air Conditioning:

Hi Tom! We are so glad you had such a great experience with Diego! Thank you for allowing us to be of services to you!

  • Overall Experience
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  • Price
  • Convenience

Fine job, great service tech

Certified always helpful, knowledgeable, and prompt.

  • Overall Experience
  • Quality
  • Price
  • Convenience

Job Locations
for alamo, ca

Diego C.

Diego C. Job Checkin

In Alamo, California this afternoon performing a furnace maintenance for the Hogan residence.

In Alamo, California this afternoon performing a furnace maintenance for the Hogan residence.

Diego C.

Diego C. Job Checkin

In Alamo, California this afternoon performing a furnace maintenance for our honey homes client!

In Alamo, California this afternoon performing a furnace maintenance for our honey homes client!

Ben C.

Ben C. Job Checkin

Completed furnace maintenance for 23 year old Goodman system. Identified issues and offered repair options.

Completed furnace maintenance for 23 year old Goodman system. Identified issues and offered repair options.

Mateo L.

Mateo L. Job Checkin

I just completed a furnace maintenance in Alamo for my client, Leo! We were able to get the filter cleaned to help the system breathe much easier! :D

I just completed a furnace maintenance in Alamo for my client, Leo! We were able to get the filter cleaned to help the system breathe much easier! :D

Galen  S.

Galen S. Job Checkin

I am in Alamo, California to look at a package unit for Comfort Corner Grooming.

I am in Alamo, California to look at a package unit for Comfort Corner Grooming.

Galen  S.

Galen S. Job Checkin

I am in Alamo, California at a custom home built in the 1980’s. The home has the original central furnace and air conditioning system installed and the new homeowner is looking to replace it with a more efficient system and add mini split units to help the upstairs rooms. After inspecting the system and ductwork, we can redesign the ducting and upgrade the central system without having to install split units.

I am in Alamo, California at a custom home built in the 1980’s. The home has the original central furnace and air conditioning system installed and the new homeowner is looking to replace it with a more efficient system and add mini split units to help the upstairs rooms. After inspecting the system and ductwork, we can redesign the ducting and upgrade the central system without having to install split units.

Diego C.

Diego C. Job Checkin

In Alamo, California this morning performing a a/c maintenance for the Levey residence. There 3 year old system is ready to go for the summer!

In Alamo, California this morning performing a a/c maintenance for the Levey residence. There 3 year old system is ready to go for the summer!

Lee J.

Lee J. Job Checkin

Here in the Alamo area on a new construction job. This has been a multi day install of 4 dykin indoor units and 4 outdoor units. It’s a 10,000sqft home

Here in the Alamo area on a new construction job. This has been a multi day install of 4 dykin indoor units and 4 outdoor units. It’s a 10,000sqft home

Galen  S.

Galen S. Job Checkin

Out in Alamo, California to look at ductwork for a private preschool. The ductwork was designed for heating only and after adding air conditioning, the seals have deteriorated and are improperly sized.

Out in Alamo, California to look at ductwork for a private preschool. The ductwork was designed for heating only and after adding air conditioning, the seals have deteriorated and are improperly sized.

Jeremiah  S.

Jeremiah S. Job Checkin

In the area of Alamo performing a furnace tune up! After completing a thorough tune up, we detected some things that don’t look to good! This 17 year old furnace is coming to the end if it’s life expectancy. Lucky for our customer we are coming to talk about replacement solutions!

In the area of Alamo performing a furnace tune up! After completing a thorough tune up, we detected some things that don’t look to good! This 17 year old furnace is coming to the end if it’s life expectancy. Lucky for our customer we are coming to talk about replacement solutions!

Diego C.

Diego C. Job Checkin

I’m Alamo this morning performing a furnace maintenance for the giari residence. There 3 year old system is up to speeds after today’s service. They’ll be nice and warm for the rest of this cold season.

I’m Alamo this morning performing a furnace maintenance for the giari residence. There 3 year old system is up to speeds after today’s service. They’ll be nice and warm for the rest of this cold season.

Jeremiah  S.

Jeremiah S. Job Checkin

In the Alamo area performing a furnace repair. This furnace unfortunately had a leak from the collector box and sediment trap! After replacing the collector box and sediment trap as well as adding adhesive to this leaking area, Our customer no longer has a leak!

In the Alamo area performing a furnace repair. This furnace unfortunately had a leak from the collector box and sediment trap! After replacing the collector box and sediment trap as well as adding adhesive to this leaking area, Our customer no longer has a leak!

Brittany B.

Brittany B. Job Checkin

Performing a diagnostic service on a 2018 Lennox furnace in Alamo, CA. The system is having a drainage issue causing water to build up inside the inducer motor and pressure switch, which in turn shuts the system down. The client had another company out earlier today that told him the motor needed to be replaced and that it would be over $3k to fix. I was able to get the motor running by draining it, and with some adjustments to the drains the system should be heating the home again very soon!

Performing a diagnostic service on a 2018 Lennox furnace in Alamo, CA. The system is having a drainage issue causing water to build up inside the inducer motor and pressure switch, which in turn shuts the system down. The client had another company out earlier today that told him the motor needed to be replaced and that it would be over $3k to fix. I was able to get the motor running by draining it, and with some adjustments to the drains the system should be heating the home again very soon!

Diego C.

Diego C. Job Checkin

In Alamo of California this afternoon performing a furnace maintenance and a/c safety check for the Hogan residence. This was there first annual visit with us. They are being proactive and prolonging the life of there equipment with this annual service!

In Alamo of California this afternoon performing a furnace maintenance and a/c safety check for the Hogan residence. This was there first annual visit with us. They are being proactive and prolonging the life of there equipment with this annual service!

Wyatt C.

Wyatt C. Job Checkin

New Heater and Air conditioner replacement today in Alamo, Ca. Happy to provide another satisfied client High Efficiency heating and Air conditioning!

New Heater and Air conditioner replacement today in Alamo, Ca. Happy to provide another satisfied client High Efficiency heating and Air conditioning!