Monthly Heating & Cooling Specials

Don’t miss out! Check this page often for rebates, discounts, and special offers!

Get up to $1,500 back with the purchase of a qualifying Lennox® home comfort system!

Every Lennox® product has been engineered to deliver best-in-class comfort and efficiency. And when two or more Lennox products are working together as part of a system, the results are truly outstanding. Whatever your home, lifestyle and budget, there’s a Lennox system that can meet your needs. Call today and save with  REBATES UP TO $1,700* OR LOW MONTHLY PAYMENT FINANCING.

Save on a complete qualifying Lennox® home comfort system that includes an air conditioner or heat pump and a gas furnace or air handler and thermostat.

lennox promotion


With the Schedule IQ feature, you only need to program the thermostat once. Whenever  there’s a change in your routine, the iComfort® S30 adapts heating and cooling to match. 


Purchase iHarmony® zoning, a major advance in precision climate control and enjoy savings and custom comfort.

wifi zoning HVAC


PUREAIR Cleans the air in your home better than any other single system you can buy. doesn’t produce ozone and that means cleaner air in every room.

pureair lennox air cleaner

Call Ernst Heating & Cooling today at 618-887-6093 or contact us online to learn more and take advantage of these limited-time offers.

*Some restrictions apply. System rebate offers range from $250–$1,700. Rebate offer is valid March 13, 2017 through June 9 with the purchase of qualifying Lennox products. Cannot be combined with any other offer. Additional add–on rebates for iComfort® S30 Thermostat, iHarmony® Zoning System and PureAir™ Air Purification system valid with a qualifying system purchase only. See your participating Lennox dealer for complete details.

**Financing available to well qualified buyers on approved credit at an 0% APR for up to 70 months, with equal monthly payments. You may prepay your account at any time without penalty. Financing is subject to credit requirements and satisfactory completion of finance documents. Any finance terms advertised are estimates only. Normal late charges apply. See your Truth in Lending Disclosures for more information.

Call Ernst Heating & Cooling today at 618-887-6093 or contact us online to learn more and take advantage of these limited-time offers.

    Ask us how to save an additional $400 with the Ameren Energy ActOnEnergy® Programs Incentive.

acton energy rebate offer

Ernst Heating & Cooling is a registered Program Ally of the Ameren Energy ActOnEnergy® Programs.

Service in Hours- Not Days
What People Are Saying About Ernst
  Reviews for Ernst Heating & Cooling

111 customer reviews

Average rating:5

by Jason W on 08/15/2017
  Great consistent...
We could not be more pleased with the level of service from Ernst. They are knowledgeable, professional and honest....
by Lisa G on 07/28/2017
  Noise in the air...
The technician was very thorough, but was unable to resolve the problem in relation to the noise of a "bang" in the...
by Jan S on 07/24/2017
  As usual, the...
We have always been pleased with Ernst Heating and Cooling...from the office to the service department...great...
by henry l on 07/19/2017
  Good, better, best
Better than most
by Wayne S on 07/15/2017
More Verified Reviews
Service in Hours- Not Days
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