How long does a good HVAC last?

• <div><p><a href="https://www.angi.com/articles/how-long-havc-last.htm">HVAC systems usually last between 10 and 30 years</a>, with most having a lifespan of around 20 years. Factors that impact a unit’s life expectancy include which brand you choose, how often you use it, and how well you maintain it. To make sure yours lasts as long as possible, make sure to keep it clean and schedule an annual service with an HVAC technician.</p></div>

How long do geothermal systems last?

• <div><p>You can expect a geothermal system to last for years. According to the <a href="https://www.energy.gov/sites/prod/files/guide_to_geothermal_heat_pumps.pdf">Department of Energy, </a>the underground infrastructure for the heat pumps lasts about 25 to 50 years, which includes the pipes buried in the soil. The actual heat pump itself has a life span of around 25 years.</p></div>

Get matched with top heating oil pros in Silex, MO

Q: Do services include refrigerant checks?

• <div><p>Yes, technicians check refrigerant levels, loop performance, and system calibration for peak efficiency.</p></div>

Q: What types of heat pumps are there?

• <div><p>There are three main types of heat pumps. An air-source heat pump system is the most common and has two parts&mdash;an indoor air handler unit and an outdoor heat pump unit. A ductless heat pump system functions similarly to an air-source heat pump system but doesn&rsquo;t need ductwork to distribute the air. A geothermal heat pump system pulls heat from the ground to help heat your home. </p></div>

Q: How long does it take for geothermal to pay for itself?

• <div><p>A geothermal heat pump system will take about <b>10 years</b> to pay for itself, and it has a life span of anywhere from about 25 to 50 years. Installing a geothermal heat pump will cost about $14,250 upfront, but it can reduce your energy bills by around 65% when compared to a conventional HVAC system. </p></div>

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Verified Reviews for Heating Oil Service pros in Silex, MO

*The Angi rating for Heating Oil Service companies in Silex, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating Oil Service needs.

*The HomeAdvisor rating for Heating Oil Service companies in Silex, MO is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating Oil Service needs.

Last update on October 22, 2025

Reviewed in September 2018
He was able to come out in 24 hours to replace the water heater. He took care of the old water heater. Everything went smoothly.
Anytime Plumbing Services
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Reviewed in April 2017
The service was free. He offers a one time fee for a lifetime of oil changes. It's about the price of 5 oil changes, but it's for the lifetime of your vehicle, or as long as you own it. You can't hardly beat it. After the 5th oil change, they're all free. I appreciate them and they're great...
O'Kean Automotive Services, Inc.
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Reviewed in December 2013
Diagnosed the problem with my heat pump, explained how the heat pump heats, cools and what my options were. The process went fine no problems, issues, or concerns.
Jim's Heating & Cooling
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Reviewed in March 2012
They did a great job. This house was like a cottage and had just baseboard heater, so they had to do all the running of the pipes and everything. It was not replacing a different system, but was like a brand new system. We did a lot of looking in the Yellow Pages and getting quotes and comparing...
Nrg Mechanical LLC
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Reviewed in March 2011
the Job went very good. We were remodling home, so he came in and insullated from the outside of home because we were not removing sheet rock inside of home so removed the vinyl and cut small holes and blowed the insutlation in between each joint. He then went to the attic and sprayed and r-32 i...
DANVILLE INSULATING CO
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Reviewed in July 2005
THIS COMPANY WAS VERY BUSY BUT GOT TO US VERY QUICKLY. THEY FIXED THE HEATING ELEMENT AND WE WERE UP AND COOKING AGAIN. THEY WERE VERY KNOWLEDGEABLE ABOUT OUR OVEN AND DID A WONDERFUL JOB. THEY WERE FAST, FRIENDLY AND VERY POLITE.
2ND TIME AROUND
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Find Heating oil pros in Silex

Siefert Mechanical - Heating & Cooling

15 Linda Ln

5.00(

)

Siefert Mechanical - Heating & Cooling

15 Linda Ln

5.00(

)

Customers say: Quick response

Recommended by 100% of Angi customers

Specializing in new system installs, System replacement, indoor air quality products such as humidifiers, EAC electronic air cleaners, ductless systems (mini splits) & Wi-fi thermostats. Providing both light commercial & residential service in St. Louis! Our #1 priority is your satisfaction!

"I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed."

Aaron C on January 2021

"I previously worked with another company to replace my furnace. The first company was extremely flakey and would constantly cancel my appointments or simply not show up. Eventually, I decided to go on Angie's List, and I found Siefert Mechanical. This company was extremely quick to get to my house, give me an estimate, and then perform the service. Not only did Siefert Mechanical quote me a price that was $600 less than the first company, they also never cancelled or missed an appointment. They came out once to give me a quote, then the very next time they came out to my house, they replaced my furnace. The quality of their work is extremely professional, and I would HIGHLY recommend this company for any heating/cooling service you need performed."

Aaron C on January 2021

Heating Oil questions, answered by experts

Yes, technicians check refrigerant levels, loop performance, and system calibration for peak efficiency.

There are three main types of heat pumps. An air-source heat pump system is the most common and has two parts—an indoor air handler unit and an outdoor heat pump unit. A ductless heat pump system functions similarly to an air-source heat pump system but doesn’t need ductwork to distribute the air. A geothermal heat pump system pulls heat from the ground to help heat your home.

HVAC systems usually last between 10 and 30 years, with most having a lifespan of around 20 years. Factors that impact a unit’s life expectancy include which brand you choose, how often you use it, and how well you maintain it. To make sure yours lasts as long as possible, make sure to keep it clean and schedule an annual service with an HVAC technician.

You can expect a geothermal system to last for years. According to the Department of Energy, the underground infrastructure for the heat pumps lasts about 25 to 50 years, which includes the pipes buried in the soil. The actual heat pump itself has a life span of around 25 years.

A geothermal heat pump system will take about 10 years to pay for itself, and it has a life span of anywhere from about 25 to 50 years. Installing a geothermal heat pump will cost about $14,250 upfront, but it can reduce your energy bills by around 65% when compared to a conventional HVAC system.

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