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Residential Services

  • New installation and replacement equipment
  • Servicing and repairing all brands of equipment
  • Ultraviolet lights
  • Heat Pumps
  • Ground Source Heat Pumps
  • Air Conditioners
  • Furnaces
  • Humidifiers
  • Boilers
  • Air Purifiers
  • Radiant Floor Heating

Commercial Services

  • New installation and replacement equipment
  • Servicing all brands of equipment
  • Chillers
  • Boilers
  • Refrigeration
  • Ice Machines


A & H Air Conditioning & Heating offers full-service for all your plumbing needs.

  • Drain cleaning
  • Bathroom & Kitchen remodels
  • Hot water recirculation for instant hot water
  • Tankless water heaters
  • Sewer inspection with color scope camera
  • Sewer replacement
  • Sump pumps
  • Faucets
  • Water Heaters
  • Hot Tub Installation

Our plumbing services are available in Lawrence, Ottawa and Baldwin City.


Why install heat pumps in your home?

  • Heat pumps have better efficiency which will equal lower utilities
  • Heat pumps are environmentally friendly by leaving less carbon in the atmosphere
  • 30% Energy Tax Credit available for ground source installations

*Be sure to ask us about the Energy Tax Credit for high efficiency equipment and ground source heat pumps. For more information, click here.

To see how the process works, please click here. To see a few facts about geothermal heating, click here.

HVAC Preventive Maintenance

Our planned service agreement (PSA’s) for residents in the Lawrence, Ottawa, Baldwin City, Kansas, and surrounding areas, can keep your system running at peak efficiency all year long and is tailored to fit your individual needs. Once enrolled, one of our trained professionals will inspect, clean, adjust, and lubricate your equipment. With each tune up we will include:


A high efficiency pleated filter
Valuable information on the condition of your equipment
priority status and preferred customer discounts on any future services
Our annual planned service agreements include the following services: 


  • Replace filter, using high efficiency pleated filter
  • Oil blower and blower motor
  • Check blower motor volts and amps
  • Check volts, amps and oil inducer motor where applicable
  • Check all safety controls and electrical connections
  • Check burners, heat exchanger and crossover assembly; clean if needed
  • Check pilot and pilot safety (or ignition assembly), clean if needed
  • Check combustion and flue draw
  • Cycle furnace, check and test overall operation
  • Turn on humidifier, clean and service (included with humidifier service only)


  • Replace filter, using high efficiency pleated filter
  • Check blower and drive belt (if applicable)
  • Oil blower and condenser fans, check amps
  • Check all safety controls and electrical connections
  • Wash condenser coil, use coil cleaner when required
  • Check refrigerant charge, using superheat method
  • Check all temperatures and pressures
  • Check compressor windings (mega ohms)
  • Check thermostat, calibrate if necessary
  • Check condensate drain, clean if needed
  • Shut of humidifier
  • Clean electronic air cleaner (if applicable)

*To keep your equipment in top condition, it is best to perform preventative maintenance on a yearly schedule. If you do not complete annual maintenance it could void your warranty.

Contact us today for more information on our planned service agreement program!

Call Us:  (785) 749-0600