Heating Repair

Our Quality Heating Repair Services

In an ideal world, your HVAC system would provide uninterrupted, reliable heating from early fall to mid-spring. Unfortunately, the realities of age, wear and tear, improper installation, or environmental pressures can sometimes cause your heating system to break down. That’s when you know it’s time to call Exxel for expert heating repairs you can count on!

What Are the Signs I Need Heating Repair Services?

Some heating system problems are obvious, like when you wake up to an ice-cold house on a winter morning. Others are more subtle and gradual, particularly if you are not enrolled in a preventative maintenance plan. Whatever the case, it’s good to know when to call in the professionals!

Some Signs You Might Need Heating Repair Services:

  • No hot air
  • No heating maintenance in over a year
  • Poor airflow
  • A spike in your energy bills
  • Strange noises like banging, thumping, and clanging
  • Burner flames that have turned from blue to yellow
  • Rapid cycling
  • Constantly adjusting your thermostat to keep your home comfortable
  • Cold spots and uneven temperatures throughout your house

If you’re experiencing any of these issues, give us a call! Our top-notch team will assess your heating system and diagnose the problem. Then, we’ll give you a competitive quote and help you weigh your options.

What Repair Services Does Exxel Offer?

Our trucks are fully stocked with quality parts to fix your HVAC equipment on the spot and get your heat working properly again without delay.

Some of the most common heating repair services we perform include:

  • Repairing and cleaning burners
  • Replacing clogged air filters
  • Replacing worn parts damaged from wear and tear
  • Replacing and repairing broken thermostats
  • Correcting improper airflow
  • Cleaning dirty elements
  • Fixing pilot light issues
  • Replacing or repairing the motor
  • And more!

Whether the problem you’re experiencing is simple or complex, we’re here to make the necessary repairs so you can get back to comfort as quickly as possible.

All Heating Systems Welcome

At Exxel, our experienced technicians work on all types of HVAC systems and heaters. We service any make and model heat pump, warm air furnace, or boiler.

Heat Pumps

Heat pumps are versatile systems that heat and cool homes and businesses, making them essential year-round. However, like all modern appliances, age, wear and tear, or environmental factors can sometimes get the better of them.

an outdoor heat pump unit outside of a residential home

Some Possible Issues:

  • Low refrigerant charge
  • Leaking refrigerant
  • Malfunctioning thermostat
  • Dirty air filter
  • Bad fan motor
  • Debris impacting the outdoor unit
  • Outdoor temperatures below 25 degrees
  • And more!

If your system isn’t kicking on, is blowing cold air, or is failing to keep your space as warm as you’d like, it’s time to call Exxel. A highly-trained, professional technician will be right over to diagnose the issue and get things back in working order as soon as possible.


Furnaces are Maryland’s most common heating appliances, and for good reason! When temperatures drop to their lowest, you can count on your furnace heating up to keep you warm and toasty – that is, unless it’s acting up!

HVAC technician working on a gas furnace heating repair job

Some Common Furnace Issues:

  • Old, dirty filters
  • Malfunctioning heat exchanger
  • Faulty starting mechanism
  • Broken blower components
  • Bad limit switch
  • Broken thermostat
  • Tripped circuit breaker
  • Clanking, squealing, or thumping noises
  • Gas leaks or foul smells

You can likely handle issues like dirty filters or tripped circuit breakers yourself. However, if you’ve examined and solved both sources of trouble and the heat still isn’t working, call us. We’ll diagnose the problem, provide a quote, and get everything back in working order before you know it!


When winter settles in, a safe, reliable boiler is the unsung hero of a comfortable home. Who doesn’t love the quiet, radiant heat that boilers provide? However, even the highest-quality systems can encounter issues over time.

a light commercial boiler in a boiler room

Common Boiler Problems:

  • Strange Noises: Like banging, whistling, gurgling.
  • Leaking
  • Loss of Pressure
  • Frozen Condensate Pipe
  • Thermostat Issues
  • Pilot Light Going Out
  • Radiators Not Warming Up
  • Faulty Pump

Our professional team offers quality HVAC services to get your boiler back in working order when the unexpected happens. Trust us to handle your boiler repair and HVAC needs with precision, expertise, and a commitment to helping your home or workplace stay comfortable all year.

24/7 Emergency Services for All Kinds Of HVAC Systems

You don’t have to wait for our regular business hours to call us. Our dedicated HVAC technicians are available 24/7 to field your concerns. They’ll be out to assess the situation and get everything back in working order as quickly as possible.

Why Choose Exxel Mechanical Services?

  • Quality Customer Service: As a local HVAC company, our customers are our top priority! We listen carefully to your concerns and explain our solutions so that you can make informed decisions.
  • Fully Licensed Technicians: Our highly trained technicians have years of experience providing top-notch HVAC services to customers in Mount Airy throughout Central MD.
  • Highly Responsive: We understand that losing heat can be distressing. We’ll answer your service call and get your heat up and running quickly.
  • Affordable Services: When you have an HVAC issue, you expect and deserve honest and fair pricing. That’s why we offer competitive prices on equipment and labor, plus exclusive financing arrangements when you need extra time to pay.

Expert HVAC System Repairs, Right In Your Neighborhood

Exxel Mechanical Services helps homeowners and small businesses keep their heating systems in excellent condition. Whether you live in Mount Airy, MD or anywhere within our service area, we are always available to help assess your HVAC needs, provide a free quote, make repairs and restore warmth to your space.

To learn more or get a free quote, contact us at 443-821-1040 or send an email to bob@exxelmechanical.com. We look forward to restoring your heat and keeping your family comfortable all winter long!

Contact Exxel


Air Conditioning

Our HVAC technicians will make sure all your Maryland home stays cool during the summer.


We’ll help repair, maintain, or replace your heating system to make sure it’s functioning properly.

Indoor Air Quality

We offer several tiers of air purification to fit your needs. We also offer HRV, humidifiers, & installation of smart thermostats.


We will help you choose the perfect size generator, the right fuel source & the best installation locations for your generator & transfer switch.