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  • Average homeowner rating star icon4.4
    Average homeowner rating
  • Verified reviews icon306
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Frankford - Updated Nov 2026

Avatar for Major league hvac
Major league hvac
5.0(
21
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallDuctless Mini-split A/C - Install or Replace+47 more

Serving Frankford, DE and surrounding areas

Approved

Super Service Award Winner

Free estimates

Emergency services offered

Warranties offered

"Had a complete HVAC system replacement. Through the whole process, they did what they said they would do and within the time frame that I was told. They responded timely and answered all my questions and concerns along the way. I am an impressed customer and delighted to recommend Major League HVAC."
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+6

7 neighbors recently requested a quote
Recommended by85%of homeowners
Mike's HVAC, LLC
4.8(
103
)
Central A/C - InstallHeat Pump - Install or ReplaceCentral A/C - Service or Repair+9 more

Serving Frankford, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Customers say: True professional

"Mike responded quickly and identified the problem. He didn’t try to sell me a new HVAC system, but advised me he “could buy us some time”. I would definitely recommend Mike to anyone needing HVAC services."
Response time11 hrs
38 neighbors recently requested a quote
Recommended by90%of homeowners
Avatar for Elite HVAC-R Service
Elite HVAC-R Service
5.0(
7
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairGas Furnace / Forced Air Heating System - Repair+12 more

Serving Frankford, DE and surrounding areas

Approved

In business since 2025

Free estimates

Warranties offered

"I had a great experience with Nate. He was extremely knowledgeable about A/C systems and was far more well-versed than many other companies in the area. He took the time to explain everything clearly, answer my questions, and make sure I understood the issue and solution. Nate was also very friendly, professional, and informative throughout the entire visit. I truly appreciated his expertise and excellent customer service. I would highly recommend Nate to anyone needing HVAC service."
3 neighbors recently requested a quote
Avatar for Sea Level Electrical Services
Sea Level Electrical Services
5.0(
18
)
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - Repair

Serving Frankford, DE and surrounding areas

Approved

Super Service Award Winner

In business since 2012

Free estimates

Emergency services offered

"Seal Level Construction and Electrical Services ran a 60 amp cable from my 200 amp service to an outdoor plug for my portable generator. They also replaced my attic fan and thermostat. They did an outstanding job from showing up on time, performing all work and cleaning up when they were done. They also set up to get the install inspected and signed off. They performed every task quickly, professionally and were meticulous in their ensuring everything was done properly the first time. The price was very reasonable and I give them my highest recommendation. Feel free to contact me with any questions."
Kitchen Remodel
Kitchen Remodel
Kitchen Remodel
Bathroom Remodel
Bathroom Remodel

+3

Response time7 hrs
Response rate98%
2 neighbors recently requested a quote
F.H. Furr Plumbing Heating AC & Electrical
5.0(
2
)
Central A/C - InstallGas Furnace / Forced Air Heating System - InstallBoiler or Radiator Heating System - Install or Replace+47 more

Serving Frankford, DE and surrounding areas

Approved (Corporate)

"My heat pump which had been installed 2 years ago by FH Furr suddenly stopped working Sunday afternoon. With the heat warnings in effect, I knew I needed help, FAST! Blair arrived this morning abd diagnosed the issue and replaced the condensation pump. These new "smart" systems have more brains than some humans!! When the pump failed, it shut down the entire system. However, Blair had the old school know-how and work ethic to get my system back online and back to normal. I have seen a nice change in technicians in the last 2 years and am always pleased to have them come out and fix any issues I may have. Keep up the good work!!"
5 neighbors recently requested a quote
Avatar for Royal Plus Electric, Inc.
Royal Plus Electric, Inc.
4.2(
222
)
Electrical Baseboard or Wall Heater - InstallElectrical Baseboard or Wall Heater - Repair

Serving Frankford, DE and surrounding areas

Approved

In business since 1988

Emergency services offered

Small jobs welcome

Royal Plus Electric has more than 38-years of experience providing energy related services and power saving options for our clients. Temporary and long term back up power needs include generator sets and ATS units, alternative energy solutions such as solar, metal halide to LED conversion lighting, electrical switch gear and distribution maintenance as well as electrical efficiency studies. Royal Plus Electric offers expertise for adaptation of solar energy into your home or business.\n

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21 neighbors recently requested a quote
Recommended by95%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

When first installed, flex ducts shouldn’t cause airflow problems in your home. However, because flex ducts aren’t the sturdiest and require extra support, they lose their durability over time and begin to sag, which can inhibit airflow down the road. Also, if your flex ducts aren’t tight enough, your HVAC could work twice as hard for the same air pressure. If you’re worried about the airflow in your home, a rigid duct may be your best bet.

Yes, ventless portable air conditioners exist, and not all standard portable air conditioners must be vented through a window.

Ventless portable units, often called evaporative coolers, do not have exhaust hoses. They use a water reservoir and a cooling pad to add moisture to the air, making it feel cooler. These units work best in dry climates because humid areas cannot absorb much additional moisture.

For standard portable air conditioners that do require venting, a window is not the only option; they can also be vented through a door, wall, or ceiling. However, it is essential to vent these units properly. Running a standard portable AC without venting it is counterproductive because it needs to expel heat to cool the room. Failing to do so will only increase the room's temperature.

There are several tell-tale signs that your AC coils need cleaning, including:

  • You’re getting higher electricity bills.

  • Your home doesn’t feel as cool as it usually does.

  • Your AC unit is running longer than usual to cool your home.

  • Your home is more humid than usual.

  • The coil is covered in frost while running.

Unfreezing an AC unit is not a DIY project unless the problem is a dirty air filter. Changing out an air filter is easy for homeowners, but otherwise, trying to repair ductwork, refill refrigerant, or replace a blower fan motor are tasks best left to the pros. Otherwise, you could cause further damage to your cooling system or even harm to yourself.

A 10,000-watt generator can run a small to mid-sized central AC unit (typically up to 3 tons or 36,000 BTU) along with a few other appliances. However, larger AC units or additional loads will require a bigger generator. Consult a local generator installer to ensure you add the correct size generator to your home.

The Frankford, DE homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.