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Service Agreements – “The Smart Choice”

Service Agreements

Heating and cooling systems tend to break down when the weather is at its worst, on the coldest day of a frigid winter, or during a sizzling summer heatwave when your home comfort system must work the hardest and when you need it most.

Regular check-ups will help to maximize your system’s life expectancy; unfortunately, even the best maintenance won’t prevent normal wear and tear.

Rest easy knowing that you and your family are protected against breakdowns and your comfort is guaranteed. Let us take care of those worries so you can focus on what’s important in life.

service tech in back of van

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Your Investment In Our Service Agreement Includes:

  • Two performance tune-ups per year
    Having your system checked regularly enables us to keep your unit running as efficiently as possible, which saves you money on your utility bill month after month. These regular check-ups also enables us to catch problems such as loose or burnt wires, and refrigerant leaks, before they lead to a larger problem such as motor failure.
  • 10% off replacement parts
    Example of savings: if the cost of a blower motor replacement was $400, you would save $40 on the repair.
  • Energy saving coil cleaning
    Dirty coils reduce efficiency and cause your unit to work harder, causing parts to wear out faster and shorten the life expectancy of your unit. Your unit will cost you more month after month on your utility bill if the coils are not kept clean. Tests performed by the EPA explain that as little as 1/10th of a centimeter of dirt or dust on a coil could reduce efficiency by 21%. Since the average homeowner’s heating and cooling bill is $1,500 per year, a 21% loss in efficiency means you could be wasting up to $315 each year.
  • No trip charges or service call charges
    With most service companies, you can expect to pay a trip charge up to $100.00. Our program customers do not have this added expense for 90 days after a maintenance check when they have a service problem.
  • 10% off repair labor
    Our discounted rates save you money with every service call. Our repair trucks are fully stocked, so we are able to repair 99% of calls on the first visit.
  • Unit purchase discounts
    If or when it’s time for a new energy-efficient unit, we offer a $50 per year replacement equipment credit accrued on an annual basis if you keep continual coverage up to a $500 credit.
  • Labor warranty
    We offer a 90 day no diagnostic fee after a maintenance check has been performed. We stand behind our work.
  • 24-hour priority service
    When you have an emergency, you can rest assured Cosby Heating & Cooling . . WILL BE THERE! Our commitment to program customers means we will have a technician at your door within 24 hours of calling our office.


All service agreements include two tune-ups per year and our No Diagnostic / Service Fee 90 Day Guarantee during Normal Business Hours (excluding holidays, weekends, and after hours). Service calls on weekends, holidays and after hours will be subject to an after-hours charge.

Why Cosby Heating and Cooling?

Help with selecting an energy-efficient heating and air conditioning system that meets your comfort preference and lifestyle.

Costless consultations from the comfort of your home with one of our HVAC technicians.

Proper sizing of the equipment to meet the unique needs of your home.

Full factory warranties on all equipment and labor.

A convenient way to pay for your installation through our flexible financing options, subject to credit approval.

Emergency Services Available.

service tech standing next to van

What we do during a performance tune-up:

Performance Heating Tune-up

  • Clean furnace
  • Clean condensate drain
  • Take temperature measurements
  • Check venting
  • Inspect burners
  • Clean flame sensor
  • Check safety controls
  • Check combustion
  • Check air flow
  • Clean condensate pump (if present)
  • Check electrical connection
  • Check electrical components
  • Inspect duct system
  • Inspect electric heating elements
  • Check ignitor
  • Clean pilot assembly (if equipped)
  • Clean or replace filter with 1″ disposable filter
  • Replace Nozzle (if fuel oil)
  • Replace Oil filter (if fuel oil)
  • Adjust electrodes (if fuel oil)
  • Test transformer (if fuel oil)
  • Check chimney draft (if fuel oil)
  • Check defrost controls (if heat pump)
  • Brush clean air coil (if geothermal unit)
  • Check pressure drop through coax (if geothermal unit)
  • Check loop pressure and temperature (if geothermal unit)
  • Check loop pump amp draws (if geothermal unit)
  • Check domestic hot water operation (if geothermal unit)
  • Visual check for refrigerant leaks (if geothermal unit)
  • Check pump amp draw (if boiler system)
  • Oil pumps (if boiler system)
  • Check pressure on system (if boiler system)
  • Check expansion tank (if boiler system)
  • Check auto feed valve (if boiler system)

Performance Cooling Tune-up

  • Clean condenser coil
  • Inspect evaporator coil is accessible
  • Clean condensate drain
  • Clean condensate pump (if present)
  • Tighten electrical connections
  • Check all electrical components
  • Take temperature measurements
  • Monitor refrigerant levels
  • Clean or replace filter with 1″ disposable filter
  • Check air flow
  • Test starting amp draw
  • Visual check for refrigerant leaks
  • Brush clean air coil (if geothermal unit)
  • Check pressure drop through coax (if geothermal unit)
  • Check loop pressure and temperature (if geothermal unit)
  • Check loop pump amp draws (if geothermal unit)
  • Check domestic hot water operation (if geothermal unit)

Preventative Maintenance

With regular maintenance, you will prevent small problems from becoming big problems and ensure optimal performance of your comfort system. We also offer annual service agreements, which can reduce the cost of a Performance Tune-Up.

Regular maintenance will:

  • Provide longer-lasting equipment
  • Reduce utility bills
  • Reduce repairs
  • Provide a more comfortable indoor environment
  • Protect your investment

Book Your AC Repair or Preventative Maintenance Today!

Choose the best air conditioner repair service in Mt. Vernon, OH – Cosby Heating & Cooling. We have an A+ rating from the Better Business Bureau, demonstrating our commitment to ethical and honest practices.
Call us today for flexible appointment scheduling, or contact us online to book your AC repair!


We Proudly Service Knox County and Surrounding Areas

  • Bellville, OH
  • Butler, OH
  • Centerburg, OH
  • Coshocton, OH
  • Danville, OH