Air Conditioning, Heating, Plumbing, and Electric Savings Coupons

Save Big with Online Deals

At Cornerstone, your budget is a priority—so we provide competitive pricing that delivers on value. To save even more, choose one of the offers below and present it to your Cornerstone technician. Thank you for entrusting your comfort to us!

Fall HVAC System Cleaning & Checkup

Only $29.95 to prepare your heating system for winter weather

Must present coupon. Cannot be combined with other coupons--one per visit.

$25 Off Any Repair

AC, Heating, Plumbing or Electrical

Must present coupon. Cannot be combined with other coupons--one per visit.

FREE Generator Estimate

Must present coupon. Cannot be combined with other coupons--one per visit.

$250 Off OR 0% Financing for 12 Months

On New 15 SEER or Higher AC System, with approved credit

Must present coupon at time of installation. Cannot be combined with other coupons--one per visit.

$650 Off Any Ductless Mini-Split AC System

If installed by Aug. 31

Must present coupon. Cannot be combined with other coupons--one per visit.

Free Nest Thermostat With Any AC Replacement

Must present coupon. Cannot be combined with other coupons--one per visit.

$50 Off LED Lighting Upgrade

Must present coupon. Cannot be combined with other coupons--one per visit.

$50 Indoor Air Quality Products

Must present coupon. Cannot be combined with other coupons--one per visit.

$100 Off New Tankless or Hybrid Water Heater Installed

Must present coupon. Cannot be combined with other coupons--one per visit.

Free Estimates & Second Opinion

New AC system, Air quality inspection, Ductwork replacement, Water heater replacement, Plumbing whole-home repipe, Water treatment & purification, Electrical panel upgrade, Whole-home generator

Must present coupon. Cannot be combined with other coupons--one per visit.

$75 Off and 0% Financing for 12 Months a Whole-Home Standby Generator

Get a free estimate today!

Must present coupon. Cannot be combined with other coupons--one per visit.

FREE Air Conditioning Estimate

Must present coupon. Cannot be combined with other coupons--one per visit.

FREE Water Quality Test & Estimate for Water Treatment

Must present coupon. Cannot be combined with other coupons--one per visit.

$50 Off New Water Heater Installation

Must present coupon. Cannot be combined with other coupons--one per visit.

$39.95 Service Call

Air, Plumbing, or Electrical. Mon-Fri 7am-7pm

Must present coupon. Cannot be combined with other coupons--one per visit.

$75 Off and 0% Financing for 12 Months on New Water Treatment System

Get a free estimate today!

Must present coupon. Cannot be combined with other coupons--one per visit.

Cash Rebate up to $1200 Instantly

Daikin Brand Energy Intelligent Indoor Comfort Equipment

12-year warranty and 100% satisfaction guarantee. Applies to qualifying Daikin equipment.

No Interest if Paid in Full Within 18 Months

Minimum purchase of $2,500 required. Special terms apply to qualifying purchases of $2,500 or more charged with approved credit. Minimum monthly payments are required during the promotional (special terms) period. Interest will be charged to your account from the purchase date at the APR for Purchases if the purchase balance is not paid in full within the promotional (special terms) period. Paying only the minimum monthly payment will not pay off the purchase balance before the end of the promotional period. For new accounts, the APR for Purchases is 28.99%. If you are charged interest in any billing cycle, the minimum interest charge will be $1.00. This information is subject to change.

Interest will be charged to your account from the purchase date if the purchase balance is not paid in full within the promotional period. Must present coupon at time of service. Cannot combine with other coupons. Offer expires 1/31/2019.