Founded in 2000, Thermo Direct has been serving residential and commercial properties with professional HVAC services that you can rely on. Our combined experience and trained and certified technicians make us industry leaders in Raleigh and our other service areas across North Carolina. Thermo Direct has over two decades of experience helping customers get the most out of their living or working environments. Our technicians are sufficiently trained and have the necessary certifications to get the job done right. With a master electrician on our team, we also tackle all types of electrical work such as panel upgrades, switch and outlet additions, wiring, and more. Need more reasons to call us? Our team is available for same-day and 24-hour emergency services. We offer seasonal specials, online coupons, and flexible financing options with approved credit. Our technicians only use state-of-the-art diagnostic equipment. We always ensure correct and timely work.
"Very nice crew. Did what I asked and on time. Job well done"
Bryan N on April 2025
Founded in 2000, Thermo Direct has been serving residential and commercial properties with professional HVAC services that you can rely on. Our combined experience and trained and certified technicians make us industry leaders in Raleigh and our other service areas across North Carolina. Thermo Direct has over two decades of experience helping customers get the most out of their living or working environments. Our technicians are sufficiently trained and have the necessary certifications to get the job done right. With a master electrician on our team, we also tackle all types of electrical work such as panel upgrades, switch and outlet additions, wiring, and more. Need more reasons to call us? Our team is available for same-day and 24-hour emergency services. We offer seasonal specials, online coupons, and flexible financing options with approved credit. Our technicians only use state-of-the-art diagnostic equipment. We always ensure correct and timely work.
"Very nice crew. Did what I asked and on time. Job well done"
Bryan N on April 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Next day service. Fast and professional. Gave good instructions to avoid future problems"
Vanessa G on May 2025
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction, from the start to the completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.
"Next day service. Fast and professional. Gave good instructions to avoid future problems"
Vanessa G on May 2025
Blanton's was established by Nathan (Bill) Blanton in 1951. Today. more than six decades later, Bill's passion for service, workmanship and customer satisfaction is still evident in the way we do business. While we embrace innovation to solve your electrical, heating, and cooling problems, our old fashioned service commitment remains the same. It's the reason we're an industry leader, and the reason so many of our customers become lifetime clients. Don't trust your system to just anyone. Blanton's hires only the most qualified technicians. We're dedicated to providing the highest quality installation, most innovative design, and most energy efficient products in the industry. Our team is committed and driven to deliver prompt, dependable and unparalleled service, with a constant focus on ensuring 100% customer satisfaction. Call us today!
"Eli was very nice and professional."
Birtena K on September 2024
Blanton's was established by Nathan (Bill) Blanton in 1951. Today. more than six decades later, Bill's passion for service, workmanship and customer satisfaction is still evident in the way we do business. While we embrace innovation to solve your electrical, heating, and cooling problems, our old fashioned service commitment remains the same. It's the reason we're an industry leader, and the reason so many of our customers become lifetime clients. Don't trust your system to just anyone. Blanton's hires only the most qualified technicians. We're dedicated to providing the highest quality installation, most innovative design, and most energy efficient products in the industry. Our team is committed and driven to deliver prompt, dependable and unparalleled service, with a constant focus on ensuring 100% customer satisfaction. Call us today!
"Eli was very nice and professional."
Birtena K on September 2024
Plumbing since 2010. As a licensed plumber, we will always valve our clients. Follow all plumbing codes. We specialize in general plumbing, water heater installs, fixtures replacement, and more. Thank you
"Was easy to communicate with and very professional. Explained everything patiently"
Sheryl S on February 2025
Plumbing since 2010. As a licensed plumber, we will always valve our clients. Follow all plumbing codes. We specialize in general plumbing, water heater installs, fixtures replacement, and more. Thank you
"Was easy to communicate with and very professional. Explained everything patiently"
Sheryl S on February 2025
hvac
"This company not only diagnosed the root cause of my problem, they also proactively looked at other potential risks at a system level to avoid sudden sysem failure due to weak points."
Tim L on March 2009
hvac
"This company not only diagnosed the root cause of my problem, they also proactively looked at other potential risks at a system level to avoid sudden sysem failure due to weak points."
Tim L on March 2009
Trusted HVAC licensed company servicing the Raleigh Durham area for more than 40 years. We pride ourselves on taking care of our customers every heating and cooling need. We offer 24 hour service and offer same day service calls.
"Overpriced and lacking follow through. After spending $14,000 on a new unit, I have had 3 service calls in 3 months. Now when I call, I get the same response, â Iâ ll pass the request alongâ and have received no updated and meanwhile it is 84 degrees in my house."
Kyle G on August 2024
Trusted HVAC licensed company servicing the Raleigh Durham area for more than 40 years. We pride ourselves on taking care of our customers every heating and cooling need. We offer 24 hour service and offer same day service calls.
"Overpriced and lacking follow through. After spending $14,000 on a new unit, I have had 3 service calls in 3 months. Now when I call, I get the same response, â Iâ ll pass the request alongâ and have received no updated and meanwhile it is 84 degrees in my house."
Kyle G on August 2024
With over 40 years of experience, Conger Plumbing, Inc., is one of North Carolina's premier plumbing companies. We specialize in all of your plumbing needs from drain clogs, to all types of water heater installations and repairs, to everything else plumbing related. Our staff takes pride in providing our homeowners with the highest quality of work and customer service. If you are looking for professionals with experience, call Conger Plumbing, Inc., today.
"Done satisfactory "
Johnny W on May 2025
With over 40 years of experience, Conger Plumbing, Inc., is one of North Carolina's premier plumbing companies. We specialize in all of your plumbing needs from drain clogs, to all types of water heater installations and repairs, to everything else plumbing related. Our staff takes pride in providing our homeowners with the highest quality of work and customer service. If you are looking for professionals with experience, call Conger Plumbing, Inc., today.
"Done satisfactory "
Johnny W on May 2025
Here at Artisan Plumbing, LLC We�re dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential plumbing services. We take pride in the attention to detail we put into each project we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, your satisfaction is top on our list. Call Artisan Plumbing, LLC Today for all your plumbing requests we will take care of it.
"Came and fixed our well pump in no time and we had water in time for the evening."
Mike W on March 2023
Here at Artisan Plumbing, LLC We�re dedicated to providing our clients with the very best in service, installation, and repair to meet your plumbing needs. We specialize in mechanical piping and a variety of residential plumbing services. We take pride in the attention to detail we put into each project we're involved with. We're known for our quality work and the integrity of our business. We look forward to building long-term relationships with our clients, your satisfaction is top on our list. Call Artisan Plumbing, LLC Today for all your plumbing requests we will take care of it.
"Came and fixed our well pump in no time and we had water in time for the evening."
Mike W on March 2023
We keep your heating, cooling, and plumbing equipment working properly and performing at peak efficiency while ensuring your comfort and keeping your air safe. We guarantee 100% satisfaction with all our work. The professionals at Air Experts have been providing comprehensive HVAC services to the residents of Raleigh, Durham, and Chapel Hill since 1986.
"Excellent and professional folks. Very courteous"
Guruprasad H on March 2025
We keep your heating, cooling, and plumbing equipment working properly and performing at peak efficiency while ensuring your comfort and keeping your air safe. We guarantee 100% satisfaction with all our work. The professionals at Air Experts have been providing comprehensive HVAC services to the residents of Raleigh, Durham, and Chapel Hill since 1986.
"Excellent and professional folks. Very courteous"
Guruprasad H on March 2025
For over a decade, the professionals at Thermo Direct Inc have worked hard for our friends and neighbors in the Triangle area. Helping homeowners and business owners, our comfort system technicians will make sure that your property’s heating and air conditioning equipment works as reliably and energy efficiently as possible. For projects big and small, we provide honest, cost-effective service. Relax... The Doctor is in the House!
"Thermo Direct replied quickly and was able to perform the services I required. I would recommend them to anyone that requires the services of a plumber."
Johnathan B on August 2024
For over a decade, the professionals at Thermo Direct Inc have worked hard for our friends and neighbors in the Triangle area. Helping homeowners and business owners, our comfort system technicians will make sure that your property’s heating and air conditioning equipment works as reliably and energy efficiently as possible. For projects big and small, we provide honest, cost-effective service. Relax... The Doctor is in the House!
"Thermo Direct replied quickly and was able to perform the services I required. I would recommend them to anyone that requires the services of a plumber."
Johnathan B on August 2024
You'll need an expansion tank if your home has a closed water system, which is standard in newer homes or those with backflow preventers or pressure regulators. Expanding hot water has nowhere to go in closed systems, creating potentially damaging pressure. The expansion tank provides space for this expanded water, protecting your plumbing system and water heater from premature failure. Many local building codes now require expansion tanks, and some water heater warranties may be voided without one.
For a standard 50-gallon water heater, a two-gallon expansion tank is sufficient. This sizing assumes normal household water pressure between 40 and 60 psi. If your home has higher water pressure (60 to 80 psi), consider upgrading to a slightly larger tank for added protection. The expansion tank's purpose is to accommodate the increased volume that occurs when cold water heats up, which is proportional to your water heater's capacity.
Watch for signs like dripping water around the tank, fluctuating water pressure throughout your home, or unusual noises in your plumbing system. A properly functioning expansion tank should feel light when tapped on the bottom—if it feels heavy or waterlogged, the internal bladder has likely failed. Other indicators include frequent triggering of your temperature and pressure relief valve, visible corrosion on the tank, or unexplained increases in your water bill, suggesting hidden leaks.
Most expansion tanks have a service life of five to 10 years, though some may last up to 12 years or more with proper maintenance. Factors affecting lifespan include water quality, system pressure, installation quality, and tank construction. Hard water areas often see shorter lifespans due to mineral buildup. Regular maintenance checks can help identify potential issues before complete failure. When your water heater is due for replacement, it's wise to replace the expansion tank simultaneously, even if it hasn't failed yet.
A 30-gallon water heater needs an expansion tank if your home has a closed plumbing system. The need for an expansion tank is determined by your plumbing system type rather than water heater size. Even smaller water heaters create thermal expansion when heating water. If your home has a backflow preventer, pressure regulator, or check valve on the main water line, you have a closed system that requires an expansion tank. Check your local plumbing codes, as many jurisdictions now mandate expansion tanks regardless of water heater size.