Placer County's #1 HVAC Contractor
Proudly serving Roseville, Rocklin, Lincoln, Loomis, and Granite Bay since 1947. Stay cool and comfortable all summer long with reliable air conditioning services. Ray O. Cook Heating & Air Conditioning provides expert AC installation, repair, and maintenance to keep your home refreshing and efficient.
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Roseville's longest locally owned HVAC company, proudly serving Placer County since 1947.
Honest Service with a leading technology edge
Roseville summers are no joke. The heat can turn your home into a sweltering hotspot. Here, a reliable air conditioner isn't just a luxury; it's essential for staying comfortable and getting a good night's sleep during those scorching summer months.
When your AC system breaks down in the middle of a heatwave, it's more than just an inconvenience; it can disrupt your entire life. That's where we come in. At Ray O. Cook Heating & Air, we're dedicated to keeping your home cool and comfortable, no matter how high the mercury rises.
Whether you need routine maintenance to keep your system in top shape, urgent repairs to get you back up and running quickly, or a brand-new AC installation, our team has the experience and expertise to help.
Fast, reliable service
Our 24/7 availability means that we're always just a call away. Call (916) 908-3289 to schedule heating repairs in Roseville, CA, today.
Reviews From Our Happy Customers
EXCELLENT Based on 2711 reviews Posted on Google Don PanecTrustindex verifies that the original source of the review is Google. My wife, Susan, and I were extremely satisfied with the professional service, attention to detail and expertise that Gino, the certified service technician from Ray O. Cook Heating and Air displayed on our service call August 4, 2026. Gino was courteous, on time, hard working and took pride in being able to thoroughly inspect and recommend needed repairs to the 4 HVac systems that provide cooling to our home. We were especially surprised to learn that Gino treats each customer’s home as if it were his own home or his mother’s home and provides a high level of service and attention to detail in all that he does. By the end of the day, after Gino had completed servicing on all 4 of our systems, Susan and I had no reservations about signing up to be Ray O Cook Service Club members and have our HVAC and Heating units routinely serviced per their annual contract. We feel very fortunate to have discovered this amazing company.Posted on Google Robert BoehmTrustindex verifies that the original source of the review is Google. Gino was professional, personable, and experienced! He took his time to diagnosis and assess what was occurring in addition to hearing my concerns about the problem before acting.Posted on Google Julie PetersonTrustindex verifies that the original source of the review is Google. Gino was prompt, polite and professional. He was very thorough and informative. Everything he suggested was based on photos and evidence he shared with us.Posted on Google Norman AshcraftTrustindex verifies that the original source of the review is Google. Gino. Many thanks for an excellent service call.. The results will be very beneficial to our air conditioning system for many years. NormanPosted on Google Eva McKenzieTrustindex verifies that the original source of the review is Google. Gino Was thorough, professional and explained everything in a clear manner Including the current status of the system and the cost for duct replacement. Cannot say enough positive about the quality of his work and his customer relations.Posted on Google Art McmahanTrustindex verifies that the original source of the review is Google. We recently had our 22 year old Rheem air conditioner/heater replaced by Ray O. Cook Heating & Air Co. The crew respond on time and did an excellent job of removing our old system & installing a new Rheem 17 Seer A/C & furnace. The crew consisted of three men (Brett, Dave & Rick). They were all very friendly, professional & helpful in answering my numerous questions. Danny in sales & the lady that set up the appointment were also very friendly & helpful. We highly recommend this company. We had our HVAC system serviced by Technician Gene Holden on July 20th 2026 and he was very professional and did a very thorough job. We were very impressed with his knowledge and communication skills.Posted on Google YvonneMarie WilliamsTrustindex verifies that the original source of the review is Google. Gino was very thorough and friendly. He explained the issues with our HVAC and even the stuff wrong we didn't know about! He made everything very easy to understand and we feel confident going forward with this company.Posted on Google Vivian RiceTrustindex verifies that the original source of the review is Google. Michael is very knowledgeable. He explains everything that we need to do, to better the function of our AC. Very polite and very respectful guy. I can recommend this company if you need help. They act fast and on time. GOOD JOB MICHAEL. Thank you👍🏽Posted on Google Sally DiPuccioTrustindex verifies that the original source of the review is Google. Can’t say enough good things about my experience with this company and with our technician Geno. Our thermostat went out on an extremely hot day and Geno came out promptly and went over our whole system and meticulously detailed via photos and video the current status of our system. There definitely was no sales pressure and safety was prioritized. I was so impressed I signed up for their maintenance contract and feel better by doing so! Thank you Geno!Verified by TrustindexTrustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more
Common Signs of Air Conditioning Issues
Your air conditioner is a complex system; like any machine, it can experience problems. Recognizing the early signs of trouble can help you address issues before they escalate into major breakdowns.
Here are some common indicators that your AC might need attention:
Insufficient cooling
If your AC runs but your home still won’t cool, check for low refrigerant from a leak, a clogged air filter, or a failing compressor that needs service soon. Call a licensed tech for a full diagnostic.
Warm air blowing
When warm air blows from your vents instead of cool air, it’s a clear warning sign. The issue may be a faulty thermostat, a frozen evaporator coil, or damaged ductwork restricting proper airflow.
Weak airflow
If airflow from your vents feels weak or uneven, it’s often caused by a clogged air filter, blocked or leaking ductwork, or a failing blower motor that needs inspection and professional repair.
Strange noises
Strange noises such as grinding, squealing, or banging coming from your AC are clear warning signs. These sounds often indicate loose, worn, or failing mechanical parts that should be inspected and repaired promptly.
Frequent cycling
If your AC is turning on and off more frequently than usual, it could be working harder than it should, potentially leading to premature wear and tear. This might indicate a problem with the thermostat, a refrigerant leak, or an oversized unit.
Water leaks or moisture
Water pooling near your indoor unit or excess moisture around the outdoor unit is a warning sign. It may indicate a clogged condensate drain line, a refrigerant leak, or another issue needing prompt service.
If you notice any of these signs, it's wise to contact a qualified HVAC technician at Ray O. Cook Heating & Air to diagnose and address the problem. Regular maintenance can also help prevent many of these issues and extend the lifespan of your system.
Located in the heart of Roseville, we are able to serve Families across the Sacramento Valley and beyond quickly
HVAC Repair, Maintenance & Installation





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Trusted HVAC Service across the Sacramento Valley, Backed by Happy Homeowners
At Ray O. Cook Heating & Air, we’re proud to be a trusted name for heating and air conditioning services in [Your Service Area]. But don’t just take our word for it—hear directly from the homeowners we’ve helped. From fast and reliable AC repair to expert furnace installation and routine HVAC maintenance, our customers consistently highlight our honest recommendations, clear communication, and quality workmanship. Browse our reviews to see why so many families choose Ray O. Cook Heating & Air for dependable, local HVAC service they can count on. If you observe any of the following common indicators, it is important to contact a professional service technician:
Emergency HVAC Repair | "they always get the job done right the first time"
When this family experienced an unexpected HVAC breakdown, they needed help fast—and that’s exactly what they got with Ray O. Cook Heating & Air. Our team responded quickly, accurately diagnosed the issue, and provided affordable, straightforward solutions without the stress or upsell. By getting the job done right the first time, we restored comfort to their home and gave them true peace of mind. It’s this kind of reliable, honest service that keeps our customers coming back.
A Decade of Trust | HVAC System Replaced the Right Way
After more than 10 years of trusting Ray O. Cook Heating & Air, this longtime customer faced the inevitable: a 43-year-old system that finally gave out. Our team responded quickly, walked him through his options with honesty and transparency, and delivered a high-quality replacement he could feel confident in. Hear how our commitment to clear communication, integrity, and expert workmanship made all the difference when it mattered most.
Tammy’s Trusted HVAC Team for Over a Decade
For more than 10 years, Tammy has relied on Ray O. Cook Heating & Air for dependable, honest service she can count on. When her air conditioner started making unusual noises, our team responded quickly to diagnose and fix the issue, without any unnecessary upsells. It’s our commitment to straightforward recommendations, fast service, and doing only what’s needed that has earned Tammy’s trust year after year.
Types of Air Conditioning Systems We Service
We can help you find the perfect air conditioning solution for your home. Whether you need to cool a large space, a room without ductwork, or a straightforward HVAC system replacement, we have the expertise to provide long-lasting, affordable solutions.
We offer a variety of cooling options, including:
- Central air conditioning: Efficient and effective cooling for your entire home.
- Heat pumps: Provide both heating and cooling, offering year-round comfort.
Our technicians are trained to install, repair, and maintain these systems and more. So no matter which type of air conditioning you choose, you can trust us to provide reliable, expert service. After all, we’re committed to keeping you comfortable all year round.
