For optimal comfort and savings, trust us to repair or service any HVAC equipment brand. Ready for an upgrade or replacement? We offer FREE ESTIMATES. With over 50 years as a Lennox dealer, we're experts in installing and servicing their efficient systems. Lennox leads in technology for customizable comfort, from programmable zone thermostats to whole house humidifiers and air purification. Trust Garrett & Campbell for top-notch service and reliability.