Monthly Heating & Cooling Specials

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

Get up to $1,700 back with the purchase of a qualifying Lennox® home comfort system!

lennox hvac promotion

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.

Offer valid from 3/13/17 to 6/9/17

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.

geothermal friends and family rebate logo

2017 Geothermal Friends & Family Referral Program

Don’t keep the satisfaction and savings of owning a geothermal system all to yourself!

If you already have a geothermal system in your home—regardless of what brand system you currently own—share the love with GeoComfort’s Geothermal Friends & Family Referral Program. You know how amazing a geothermal system truly is, share the benefits with your friends and family! Refer them to GeoComfort and they will receive a $400 rebate after their purchase. And as a thank you, you will also be sent a $100 reward. There is no limit to the number of referrals you can submit! Click here to see complete program rules, then sign up to get started!

Expires 4/30/2017

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

103 customer reviews

Average rating:5

  Easy to work with!
Easy to work with!!
by rob s on 06/18/2017
  Well satisfied...
Glad to continue business with Ernst.
by steve l on 06/15/2017
  Just fine. Ok
I prefer to have the same technician from one time to the next so that the person is more familiar with my home. This...
by jeanie b on 06/14/2017
  Replace Furnace...
We had Ernst install a replacement furnace and air conditioner. The install went very smoothly and quickly and the...
by Southern Illinois District L on 06/14/2017
  review is written
I wrote a review yesterday. It was not up to the standards that I have received from Ernst Heating in the past. The...
by Mary K on 05/30/2017
More Verified Reviews
Service in Hours- Not Days
Forced Air vs. Central Air: What’s the Difference?
Posted On:May 20, 2017

In the HVAC industry you are likely to encounter an absolutely astounding number of terms. You’ll hear these from your technician, from the specialist performing...