- What is the difference between R-22 and R-410A refrigerants?
- What is two-stage cooling?
- Should I Cover My Air Conditioner or Heat Pump In The Fall And Winter?
- What is a heat pump?
- What is the best thermostat to use for my heating system?
- What is the difference between an ARI and AHRI?
- Why should I zone my house?
- Who do I contact if I have any questions?
- What is AHRI?
- How can I compare one Lennox® product to another?
- Are all air filters created equal?
- What is the difference between the Lennox Equipment Limited Warranty and the Lennox 10-Year Extended Limited Warranty Program?
- What products are NOT covered under warranty?
- What is an AHRI-matched system?
- What is involved in humidifier installation and maintenance?
- Can Equipment Be Registered After 60 Days from Either the Installation Date or Closing Date In The Case Of A Newly Constructed Home?
- How do I know which humidifier is right for me?
- What is Indoor Air Quality?
- What is SilentComfort™ technology?
- What Lennox products are eligible for this 10-Year Extended Limited Warranty Program?
- What is two-stage heating?
- What information do I need to register?
- Why can't I purchase Lennox products online?
- How do the PureAir™ and PureAir™ S air purification systems work?
- I Live In A State Or Province Where Registration Is Not Required. Do I Qualify For The Extended Limited Warranty?
- How does a home ventilation system work?
- What's so special about Lennox Dealers?
- What are some of the health effects of carbon monoxide?
FREQUENTLY ASKED QUESTIONS
Perfect comfort is something we want you to experience long after you’ve purchased your Lennox® product. That’s why we offer a collection of resources that make it as easy as possible for you to get the answers and support you need.


