Certified by Carter Comfort Systems • Apr 26, 2026
HVAC ContractorAir Conditioning ContractorAir Quality ConsultantHeating ContractorWater Heater Service
Carter Comfort Systems has been the trusted name in HVAC repair for Treasure Valley, ID for over three decades. Our family-owned and operated business takes pride in delivering exceptional HVAC services to our community. We understand that your comfort is paramount, which is why we offer a comprehensive range of heating, cooling, and air quality solutions tailored to meet your specific needs. Our team of highly skilled technicians is trained to work with all makes and models of HVAC units, ensuring that we can address any issue you might face. Whether you need routine maintenance, an emergency AC repair, or a complete system installation, we're here to ensure your home or business maintains optimal comfort year-round.
Location
Certified by Carter Comfort Systems • Apr 26, 2026
Certified by Carter Comfort Systems • Apr 26, 2026
Monday8:00 AM - 5:00 PM
Tuesday8:00 AM - 5:00 PM
Wednesday8:00 AM - 5:00 PM
Thursday8:00 AM - 5:00 PM
Friday8:00 AM - 5:00 PM
SaturdayClosed
SundayClosed
5/25/20268:00 AM - 5:00 PM
7/4/2026Closed
9/7/20268:00 AM - 5:00 PM
11/26/20268:00 AM - 5:00 PM
12/25/20268:00 AM - 5:00 PM
1/1/20278:00 AM - 5:00 PM
Reviews
5.0
256 reviews
5 stars
254
4 stars1
3 stars0
2 stars1
1 star0
JS
Jennie Stanley
2 days ago
5.0
Andrew Gretzner did my maintenance he's great 👍
RS
Richard Sims
Apr 22, 2026
5.0
Noticed a potential gas leak last night. Called them and they had a person there the next day. Andrew investigated thoroughly on the outside and in the crawl space and made sure there was no leak. He also did a very good job explaining how all the connections worked. Very satisfied.
MM
Marc
Apr 10, 2026
5.0
Started using Carter Comfort for routine maintenance last year. Everyone I’ve interacted with has been very responsive and very professional. Andrew came out today to take care of a minor problem, he went above and beyond to ensure my concern was handled, and he explained exactly what he was doing along the way. I definitely recommend this company.
JB
Julie Bolopue
Apr 9, 2026
5.0
Yearly maintenance was performed. Tech did a good job. Had an issue with the air conditioner and reported it to the office. Andrew was out within an hour. Turned out not to be a problem. He will provide more training so the tech understands our system better.Andre was amazing. He performed diagnostics and within 15 minutes was able to determine the system is functioning properly! He stayed here to explain what the tech was experiencing and explained how the system functions and why the tech thought it was a problem.
Carter has always been dependable and efficient and very quick to respond to our needs! we highly recommend this company! They may charge a bit more than the big companies but the response and service you receive is at the highest level.
AJ
alan Jones
Mar 31, 2026
5.0
Carter comfort systems is a great company.
They show up on time and Andrew Gretzner is very knowledgeable.
He explained things that were going on with my system.
I would recommend them to service your HVAC system.
Frequently Asked Questions About Carter Comfort Systems
My energy costs are high. Will a new system reduce my costs?
A new heating and air conditioning system can substantially lower your energy expenses. Today's equipment operates much more efficiently thanks to technological improvements and higher minimum efficiency standards. Depending on the efficiency level you choose, you could save between 25% to 60% on heating and cooling costs. With energy prices continuing to rise, investing in high-efficiency equipment makes financial sense. We provide complimentary in-home consultations where our qualified technicians will help you choose a system that reduces your energy bills, improves comfort, and fits your financial situation.
Do you offer financing?
We do offer various financing options to meet different customer needs. Our financing plans feature competitive rates, and the application process is simple and efficient. We would be happy to review your specific requirements and help you find a financing solution that aligns with your budget. Please reach out to us for additional details.
Do I run any risk by accepting the lowest bid?
Accepting the lowest bid can present significant risks. When a bid is considerably lower than others, it may indicate the use of inferior products, poor installation quality, or the exclusion of necessary costs such as permits or required inspections. At Carter Comfort Systems, we manage every aspect of the installation process, allowing you to simply enjoy the improved comfort and energy efficiency of your new system without concerns.
Should I turn off my furnace before I go on vacation to save energy?
For brief vacations, it's more advisable to adjust your thermostat settings rather than completely shutting off your HVAC system. During summer months with air conditioning, setting the temperature to approximately 85 degrees is recommended. In winter, maintaining a temperature of around 60 degrees is appropriate for trips lasting a few days. These temperature settings help protect indoor plants and prevent pipes from freezing and rupturing during cold weather periods.
Why are furnaces and air conditioners so noisy?
Older heating and cooling systems typically generate more noise due to the less sophisticated materials used in their construction. Contemporary systems, particularly those manufactured by Trane, incorporate higher-grade components and noise-reduction technologies. For example, Trane units feature sound insulation on the compressor and a protective weather guard top. These design elements not only reduce operational noise but also contribute to system longevity by preventing debris from entering critical components.
What are the benefits of a programmable thermostat?
Programmable thermostats provide greater control over your home's temperature management. You can program the system to automatically adjust temperatures according to your daily schedule, reducing energy consumption when you're absent and ensuring comfort when you return. This precise temperature control can result in considerable energy savings, potentially reducing heating expenses by up to 15% during winter and cooling costs by 10% in summer months.
Would a new AC unit help me lower my costs during the summer?
Installing a new air conditioning unit can effectively reduce your summer cooling expenses, particularly if your current system is aging. For example, a 15-year-old unit might have a SEER rating as low as 6. Upgrading to a new, energy-efficient Trane air conditioner could save you approximately $600 per summer on a standard 4-ton unit. These savings are achievable while maintaining cooler indoor temperatures compared to the typical energy-conservation setting of 78 degrees.
Is a bigger furnace or air conditioner better?
Despite common misconceptions, larger HVAC systems aren't necessarily better. The key to maximizing comfort, reliability, and efficiency is selecting the appropriate size for your specific requirements. An oversized system can actually result in decreased comfort levels, reduced reliability, and lower efficiency compared to a properly sized unit. We offer various system options, and our experienced technicians can determine the ideal size based on your home characteristics and lifestyle needs.
How big should my system be?
The correct sizing of your HVAC system is essential for optimal performance. An oversized system may experience short cycling, leading to increased energy usage, premature equipment failure, and inconsistent comfort. Conversely, an undersized system might struggle to maintain desired temperatures. Since each home has unique characteristics, our specialists perform detailed calculations to ensure precise system sizing. We encourage you to schedule a free analysis to determine the most appropriate system size for your specific home.
Why is important for me to continue my service agreement?
Continuing your service agreement provides multiple advantages. It helps reduce utility costs, extend equipment life, minimize repair needs, and improve system performance. Additionally, you receive a 15% discount on repairs, priority customer status, inflation protection, round-the-clock emergency service, and no overtime charges. Regular maintenance through a service agreement ensures your HVAC system functions at maximum efficiency, delivering consistent comfort and long-term cost benefits.
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