We went from a furnace that was probably running at 60% efficiency to a Carrier that is better than 90%, so we couldn't be happier with the performance so far. His crew were quick, courteous and professional. They left the basement cleaner than they found it. I still will need to tune the A/C in the spring, as it's too cold to do so now (in southern Wisconsin), but I'm sure that will go without a hitch. I appreciate RA Heating, and will choose to continue to service the units they put in today through them."},"url":"https://www.angi.com/companylist/us/wi/evansville/ra-heating-and-air-conditioning-inc-reviews-348845.htm"},"position":7},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Krause's Service Station","address":{"@type":"PostalAddress","addressRegion":"WI","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Jennie B."},"reviewBody":"I have been using them for oil changes and other repairs, and I just feel like he is trustworthy, and gives good advise. He can fix something that is beyond fixing. I use them all the time."},"url":"https://www.angi.com/companylist/us/wi/berlin/krause%27s-service-station-reviews-7428346.htm"},"position":8},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Warren Heating & Air Conditioning","address":{"@type":"PostalAddress","addressRegion":"WI","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Dan W."},"reviewBody":"Woke up at 6:00 AM on a 10-degree day to a cold house. The furnace was blowing cold air. I called and left a message at 7:00 and they called back about 5 minutes later. The technician showed up before 8:30 and was gone around 9:00. The heat is fixed. He recommended I replace the filter and think about a new furnace but didn't push to sell me anything. He also gave me the $25 coupon before I mentioned it. Extremely fast service!
Update: A few days later the new igniter failed. I called and they immediately came and replaced it with a newer, heavier-duty one for free.
Update: No further problems, over a year later."},"url":"https://www.angi.com/companylist/us/wi/madison/warren-heating-and-air-conditioning-reviews-414027.htm"},"position":9},{"@type":"ListItem","item":{"@type":"LocalBusiness","name":"Olson Heating, Cooling & App LLC","address":{"@type":"PostalAddress","addressRegion":"WI","addressCountry":"US"},"review":{"@type":"Review","author":{"@type":"Person","name":"Robert G."},"reviewBody":"I like that they're local. The scheduling is really easy with them. They're very prompt. We had our whole heating and cooling system replaced in December. They cleaned up the whole place. They didn't leave a mess. Everything was done correctly."},"url":"https://www.angi.com/companylist/us/wi/mount-horeb/olson-heating%2C-cooling-and-app-llc-reviews-6258638.htm"},"position":10}]}
Heating Oil Service reviews from real Angi homeowners in Sauk City, WI
About 2 weeks ago (2/17) we woke to a burning plastic smell coming from our furnace. Modern came up in a HVAC near me search so we called them. They did show up quickly to service our furnace. I’ll give them that. The tech that came did a less than thorough service on the unit. The tech found...
James G.
5.0
01/2019
I recently had Jensen Plumbing and Heating replace my entire HVAC system, because my furnace had some serious problems. The owners, Sheldon & Jen, were very knowledgable and pleasant to deal with; their installers, Dave & Nate, did an excellent job. They sold me a high efficiency Carrier...
Aimee B.
5.0
06/2017
What do I know about garage doors? Nothing. He could have charged me hundreds. But all I needed was a little oil. Under $100 for everything.Honest honest honest.
Todd S.
5.0
02/2016
From the pricing to the install, this was an easy, honest, and up-front process. Guys were supposed to be here by 8:30, and showed up very promptly. They installed everything we agreed upon, less the chimney liner, which thankfully wasn't needed. I appreciated Ryan showing up and working...
Woke up at 6:00 AM on a 10-degree day to a cold house. The furnace was blowing cold air. I called and left a message at 7:00 and they called back about 5 minutes later. The technician showed up before 8:30 and was gone around 9:00. The heat is fixed. He recommended I replace the filter...
Robert G.
4.0
05/2012
I like that they're local. The scheduling is really easy with them. They're very prompt. We had our whole heating and cooling system replaced in December. They cleaned up the whole place. They didn't leave a mess. Everything was done correctly.
Since 1984, Cardinal Heating, Cooling, Plumbing & Electric has provided the Sun Prairie, WI and the surrounding area with exceptional Heating, Air Conditioning, Electrical and Plumbing services. We offer professional technicians, same-day installations and 24-hour emergency service. We believe we are the right choice for any of your HVAC, Plumbing, or Electrical needs. Call today to schedule your next appointment!
"The inspection turned into a new furnace and air conditioner. I decided to take advantage of their special of $1000 off if you replace both. Mine were old enough so that I decided to replace rather than repair. Technicians were very pleasant, knowledgeable, and professional."
June G on October 2025
Since 1984, Cardinal Heating, Cooling, Plumbing & Electric has provided the Sun Prairie, WI and the surrounding area with exceptional Heating, Air Conditioning, Electrical and Plumbing services. We offer professional technicians, same-day installations and 24-hour emergency service. We believe we are the right choice for any of your HVAC, Plumbing, or Electrical needs. Call today to schedule your next appointment!
"The inspection turned into a new furnace and air conditioner. I decided to take advantage of their special of $1000 off if you replace both. Mine were old enough so that I decided to replace rather than repair. Technicians were very pleasant, knowledgeable, and professional."
WIREONE is working to become the leading electrical contractor in the region through a customer-centric approach that provides our clients with the absolute best electrical services available. Our journeyman electricians are some of the most positively reviewed electricians in the industry. They consistently receive five-star reviews on sites such as Facebook and Google. We begin each residential service call with a client conference during which we’ll sit down with you to discuss your project and any related electrical needs. After gaining a complete understanding of your goals, we’ll perform our complimentary 57-point “Keep it Safe Inspection” to ensure that the electrical system in your home is performing safely and in conformance with local building codes. Then, before any work begins, we’ll provide you with Our Best Price. Our Best Price will be the most cost-effective way to complete your project quickly and safely. We also include a 5 year warranty on all work performed!
"They went above and beyond where the project started at and the technician was really great!"
Sam S on October 2025
WIREONE is working to become the leading electrical contractor in the region through a customer-centric approach that provides our clients with the absolute best electrical services available. Our journeyman electricians are some of the most positively reviewed electricians in the industry. They consistently receive five-star reviews on sites such as Facebook and Google. We begin each residential service call with a client conference during which we’ll sit down with you to discuss your project and any related electrical needs. After gaining a complete understanding of your goals, we’ll perform our complimentary 57-point “Keep it Safe Inspection” to ensure that the electrical system in your home is performing safely and in conformance with local building codes. Then, before any work begins, we’ll provide you with Our Best Price. Our Best Price will be the most cost-effective way to complete your project quickly and safely. We also include a 5 year warranty on all work performed!
"They went above and beyond where the project started at and the technician was really great!"
At Southport Home Services, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the top medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.
At Southport Home Services, we're A+ rated by the BBB. Our technicians are NATE certified to meet national standards of excellence, and we're a Carrier® Factory Authorized Dealer, recently cited as the top medium-sized business to work for by the Milwaukee Journal Sentinel. We treat our team well and hold them to high professional standards. Our up front, transparent pricing, great customer service, and honesty in our business practices make us the plumbing and HVAC company that you'll feel good working with on a regular basis, with 100% satisfaction guaranteed.
A family owned business that has been going strong for over 20 years!!! Our goal is to make getting rid of anything fast, and easy! We specialize in fuel oil tank removal. Licensed with the DNR, EPA and carry a full line of insurance.
A family owned business that has been going strong for over 20 years!!! Our goal is to make getting rid of anything fast, and easy! We specialize in fuel oil tank removal. Licensed with the DNR, EPA and carry a full line of insurance.
Owner Operated. Cost determined by the job. NRPP Certification #RMT-101552, AARST Member. Licensed. Cash accepted. https://www.lifetimehomeservices.com/
"They did an outstanding job. First rate. I would highly recommend Lifetime Home Services."
Dan K on January 2025
Owner Operated. Cost determined by the job. NRPP Certification #RMT-101552, AARST Member. Licensed. Cash accepted. https://www.lifetimehomeservices.com/
"They did an outstanding job. First rate. I would highly recommend Lifetime Home Services."
Dan K on January 2025
Heating Oil questions, answered by experts
The most obvious downside is the high upfront cost of buying and installing one of these systems. Additionally, sometimes the system can take a longer time to heat than alternatives like a boiler. Also, if something goes wrong with the geothermal pump, repairs are often significantly more expensive than repairing traditional, above-ground heat pumps.
Leaks, poor airflow, reduced efficiency, and loop blockages are common problems requiring service.
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.
Service costs range from $200 to $1,500, depending on maintenance needs, system age, and labor.
By submitting this question, I acknowledge and agree that Angi may publicly display my name, city, state, and question on the website for professionals and others to see.
The homeowners guide to home care is here
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