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Verified Reviews for Heating Oil Service pros in Frederick, OK

*The Angi rating for Heating Oil Service companies in Frederick, OK 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 Frederick, OK 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 December 06, 2025

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Avatar for D & R Heating & Air

D & R Heating & Air

5.00(
7
)
•Approved Pro

D & R Heating & Air

5.00(
7
)
•Approved Pro
Customers say: Quick response
30 local quotes requested
44 years of experience

D & R Heating & Air is a full-service HVAC company serving throughout Lawton & Elgin, OK and surrounding areas. With over 18 years of experience in the heating and cooling industry, we are dedicated to providing excellent servie at affordable prices. We also offer financing solutions to make things easier on your pocketbook. We do air duct installations and offer HVAC unit installations, repair, and maintenance services. You can count on us for service completed with attention to detail and the utmost respect for your time and property. Rely on D & R Heating & Air for HVAC repair, replacement or maintenance.

"Our appointment was fir between 9am - noon. He called sbout 8:30am to say he was on his way. He arrived just after 9am. He was nice, friendly and courteous. We just wanted our furnace cleaned and inspect. He did the job and told us our furnace was in great shape. He didn't try to uosell us on anything. I would recommend D&R HEATING AND AIR. "

Keith P on October 2025

D & R Heating & Air is a full-service HVAC company serving throughout Lawton & Elgin, OK and surrounding areas. With over 18 years of experience in the heating and cooling industry, we are dedicated to providing excellent servie at affordable prices. We also offer financing solutions to make things easier on your pocketbook. We do air duct installations and offer HVAC unit installations, repair, and maintenance services. You can count on us for service completed with attention to detail and the utmost respect for your time and property. Rely on D & R Heating & Air for HVAC repair, replacement or maintenance.

"Our appointment was fir between 9am - noon. He called sbout 8:30am to say he was on his way. He arrived just after 9am. He was nice, friendly and courteous. We just wanted our furnace cleaned and inspect. He did the job and told us our furnace was in great shape. He didn't try to uosell us on anything. I would recommend D&R HEATING AND AIR. "

Keith P on October 2025

FLOWERS HEATING & AIR COND

5.00(
1
)

FLOWERS HEATING & AIR COND

5.00(
1
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Flowers Heating and A/C is a family owned business taking care of all residential and small comerical heating and a/c needs in our service area. We offer several financing options to help our customers have a quality heating and a/c system that will keep their home comfortable and utility bills low. We also offer air quality produces for clean air and healty living.

Flowers Heating and A/C is a family owned business taking care of all residential and small comerical heating and a/c needs in our service area. We offer several financing options to help our customers have a quality heating and a/c system that will keep their home comfortable and utility bills low. We also offer air quality produces for clean air and healty living.

Avatar for Red and Blue Heating & Air

Red and Blue Heating & Air

5.00(
29
)

Red and Blue Heating & Air

5.00(
29
)
Customers say: Quick response
Recommended by 100% of Angi customers
Recommended by 100% of HomeAdvisor customers

Red and Blue Heating & Air provides our customers with the best technicians and installers this industry has to offer. We understand how important it is for your heating, cooling, ventilation, refrigeration and appliances to be running properly. Our customers particularly value our professionalism, honesty, respectfulness and friendliness.

Red and Blue Heating & Air provides our customers with the best technicians and installers this industry has to offer. We understand how important it is for your heating, cooling, ventilation, refrigeration and appliances to be running properly. Our customers particularly value our professionalism, honesty, respectfulness and friendliness.

Heating Oil questions, answered by experts

Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt. 

Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.

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

Yes, many providers offer organic or eco-friendly treatments. Confirm availability with your contractor.

It’s a better use of energy (and your money) NOT to run an ERV system all the time. Most experts recommend that you cycle your ERV system on and off throughout the year. However, the recommended advice could change based on your climate, the number of people in your home, the size and style of your home, and your heating and cooling system. Contact a local pro for more specific advice.

While it's generally safe to stay in a home with a coolant leak if your home is properly ventilated, it's important to have a professional come out to assess the situation right away. You should evacuate your home if you notice any powerful fumes. Additionally, you should leave your home if you are experiencing headaches or dizziness.

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