Top Flight Heating & Air

#1 Residential HVAC Company in Sussex County, DE

Top Flight Heating & Air Mascott
HVAC Services

HVAC Services in Delaware

Home heating and air conditioning may be relatively modern inventions, but we’re all guilty of taking indoor climate control for granted here and there. It’s easy to forget how much you rely on your heating and air conditioning unit until something goes wrong, and all of a sudden, your HVAC equipment becomes more of a burden than a benefit.

Get your system back up and running again with professional help from Delaware’s number-one heating and cooling company! Top Flight Heating & Air is the top residential company in Sussex County, DE, with over a decade of experience providing HVAC services throughout Delaware. Our HVAC technicians are dependable, efficient, friendly, and dedicated to helping all Delaware homeowners stay comfortable. Schedule your appointment now, or keep reading to learn more about how our experienced team can save you time and money!

Your Local HVAC Contractors

At Top Flight Heating & Air, we take pride in being the best HVAC company in the Sussex County area. Our skilled, professional technicians offer routine HVAC maintenance services, same-day service for emergencies, and many other services for your HVAC equipment. You can find us servicing heating and cooling systems near you if you’re local to any of these DE areas:

  • Milton
  • Lewes
  • Rehoboth Beach
  • Milford
  • Millsboro
  • Georgetown

Our Heating Company Can Keep You Toasty

Delaware weather can get uncomfortably chilly, so it’s vital that you have a working heater in your home or office. Many of our customers don’t think much about their furnaces, but unfortunately, heating systems are often vulnerable to many of the same problems as cooling systems, including wear and tear, sudden breakdowns, and stubborn refusal to turn on.

Don’t turn into a popsicle because your home’s heater, furnace, or boiler is broken! Our residential HVAC company in Sussex County, DE, handles heating services of all kinds, including but not limited to installation, maintenance, and repair. If you need a new furnace, equipment repair, or other heating services in Sussex County, let our business take care of you and book service today! Our technicians are qualified and trained to repair, service, install, and maintain all types of heating systems, including but not limited to:

  • Electric Furnaces
  • Gas Furnaces
  • Boilers
  • Heat Pumps
  • Ductless Mini-Split Systems
  • Smart Thermostats
  • All Heating System Makes and Models


It’s better to be safe than sorry when the weather is freezing, so if you suspect something is wrong, it’s always ideal to schedule service today rather than put it off until tomorrow. To ensure our technicians can keep you and your family protected from chilly conditions, schedule professional heating system repair, installation, or maintenance as soon as you notice something wrong. We can also provide recommendations for new, energy-efficient unit installation if replacing your current HVAC unit will be more cost-effective.

Hot Summer Day? Chill Out With Our Cooling Company!

Cooling systems are convenient, but eventually, every air conditioning system will reach its breaking point. Our HVAC pros are air conditioning specialists, so if the air conditioner at your home or office is acting up, call Sussex County’s best AC company for service today, and we’ll be there right away to repair or replace your AC system.

Our licensed contractors provide a wide array of air conditioning services in Sussex County, including AC system replacement, installation, and maintenance. We are also available for emergency air conditioner repair. Whatever’s going wrong with your air conditioner, Top Flight is the best air conditioning company for the job!

We service the following types of systems:

  • Window Units
  • Central AC Systems
  • Ductless Systems & Mini-Splits
  • Combined Heating and Cooling Units
  • Gas-Powered Air Conditioning Systems
  • Energy-Efficient Air Conditioning Units
  • All Air Conditioning Makes and Models


Some homeowners delay air conditioning repair because they assume that being too hot is not as dangerous as being too cold. However, heat can have many negative health effects as well, especially for small children, older family members, and pets. Although Sussex County doesn’t get as hot as some of our neighboring communities to the south, it’s still best to be cautious, so don’t wait to book HVAC services. Click “Book Now” to schedule service today, or call our trained pros to learn more.

What Makes Us the Best HVAC Company in Delaware?

Our residential HVAC company in Sussex County, DE, has racked up hundreds of five-star reviews from homeowners throughout Milton, Lewes, Rehoboth Beach, Milford, Millsboro, and Georgetown, DE. Here are a few reasons why so many clients rate us as the best air conditioning company in the Sussex County area.

Well-Trained Team

Top Flight only employs experienced technicians with extensive knowledge in the HVAC industry. Our team can install, repair, or maintain everything from furnaces to boilers to AC units and everything in between. We are proud to provide efficient and effective services for both residential and commercial properties.

Top-Quality Equipment

We provide repairs for all types of heating and air conditioning systems, but we only install systems we’d use ourselves. That means we only use top industry brands and products and never cut corners during a repair or installation job. We work with manufacturers including but not limited to American Standard, Trane, AccuClean, and Mitsubishi.

Satisfaction Guarantee

When you call on our business to install or repair your heating or AC system, you’ll love the results — or you’ll get your money back! We offer a 100% satisfaction guarantee on every installation job and guarantee every repair for two years. Top Flight is the name to trust for top-notch, high-quality services every time.

Affordable Prices

We offer competitive pricing and financing options to make our services accessible to everyone. In addition, we offer affordable maintenance agreements through our Soaring Comfort Club, bringing you even more savings on heating and cooling repairs and routine service!

24/7 Service

We provide 24/7 emergency heating and cooling repairs for unexpected issues. If you are dealing with a heating or cooling emergency right now, click “Book Now” to schedule service today, and we’ll be there as soon as possible.

Topflight Heating & Air - Service


We will meet with you and discuss your needs and offer the best options on the market. You have options and we will help you make the right choice. 

Topflight Heating & Air - Sales


Top Flight Heating & Air not only services what we sell but we work on all manufacturing units as well.  If you think your HVAC isn’t doing what it needs to be doing, give us a call.  

Topflight Heating & Air - Installation


Building a new home?  Adding on an addition to your existing home? Top Flight Heating & Air offers Air Conditioning and Heating Installation Services in Sussex County, Delaware

Top Flight Heating & Air Mascott
HVAC Services

Spring Into Savings!


Tips & Tricks to Keep Your HVAC Units Running for Longer

Want to cut down your heating and AC bills, save money on repair, and ensure your HVAC systems continue working properly for many years to come? Try these tips from our expert technicians!

Change Air Filters Regularly

A dirty air filter can cause your heating or AC system to work harder than necessary, leading to increased wear and tear. It can also affect your home’s indoor air quality by stirring up allergens, dust, and dirt. Make sure to change your unit’s air filters every 1-3 months, depending on usage. Our HVAC services professionals can provide assistance with this task if you aren’t sure what to do.

Keep Your HVAC Units Clean

Outdoor heat pumps and other outdoor HVAC systems can accumulate dirt, debris, and other elements that impede performance. Clean the unit periodically or hire a professional to do so.

Install a Programmable Thermostat

Programmable thermostats allow you to manage your home’s temperature settings more efficiently, reducing the workload on your HVAC unit while also saving energy and money. You’ll also be able to change your heating and AC settings remotely, monitor your units for any necessary repairs, and keep an eye on how much energy you are using while heating or cooling your living space.

Seal Ductwork

Leaks in your ductwork can cause cool or warm air to escape before it reaches its intended destination, forcing your HVAC systems to work harder than necessary. Have a professional inspect and repair any leaks in your ductwork and replace any damaged or missing components.

Don’t Block Vents

Blocking vents with furniture or other items can restrict airflow in your home, causing strain on your HVAC systems and increasing your energy bills. Allow air to flow freely by moving items away from vents, and make sure to install the right vent registers so that your heating or air conditioning unit actually does its job.

Don’t Miss HVAC Maintenance

Schedule regular maintenance for your HVAC system twice a year, once during spring and once during fall. This will help ensure that your heating or air conditioning system is functioning at optimal levels. Routine tune-ups are also a great way to prevent any potential issues from becoming major problems.

Never Put Off Repairs

Damaged air conditioning and heating units can cost you a fortune over time; plus, waiting to book HVAC services makes everyone in your home uncomfortable. Call our residential HVAC company in Sussex County, DE, and our HVAC services experts will sort out your problem quickly so you can preserve your investment in your equipment.

Top Flight Heating & Air Truck

What Our Clients Say About us

Call Our HVAC Contractors for Service Today!

When your home comfort is on the line, choose Delaware’s best AC company, and we’ll never let you down. Contact our residential HVAC company in Sussex County, DE, now and schedule heating or air conditioning service today. We’ll have your heating or cooling system working again before you know it!