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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!

$99 Water Heater Flush — Extend the Life of Your Water Heater

Remove sediment buildup to improve efficiency, recovery time, and equipment lifespan.

*Offer applies to one standard residential tank water heater up to 75 gallons. Tankless units are excluded and may be serviced at a separate rate. Technician reserves the right to decline service if unit conditions present safety risks. Additional services, repairs, or parts are not included and will require separate approval and estimate. Not valid with other offers or prior purchases. Residential customers only. Available at participating locations. Offer may be modified or discontinued at any time. Limited time only.
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New HVAC System Payments as Low as $119/Month + FREE UV Air Purifier with ProSeal a $999 value

Upgrade to a new high-efficiency system this summer with affordable monthly payments

Fine print: *Financing: With approved credit. Subject to credit approval and lender terms. Estimated monthly payment of $119 based on a financed amount of $10,917.43 at 9.99% APR for 180 months, using a payment factor of 1.09%. Not all applicants will qualify for advertised rate or term; actual payment, APR, and terms may vary based on creditworthiness, equipment selected, and lender underwriting. Subject to lender approval. UV add-on: Free UV air purifier (estimated value $1,200) included with the purchase and professional installation of a qualifying new HVAC system when ProSeal duct sealing is added. UV unit installed at the coil with ProSeal service. ProSeal duct sealing sold separately and may be financed. Cannot be combined with other promotions. Residential customers only. Valid at participating locations. Offer subject to change without notice. See dealer for complete details. Expires 8/31/2026.
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Up to $100 OFF Any Plumbing, Heating, Cooling, or Electrical Repair

Don't go uncomfortable — call us 24/7!

*$300 minimum purchase required, some restrictions apply. Excludes Service Call Fee. Valid only for residential customers. Not valid with any other offers, discounts, or on prior sales. Expires 8/31/2026.
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Only $98 Main Drain Clearing

Plumbing problems? We've got you covered.

*Offer valid for cable of main sewer line up to 100 ft. Proper cleanout access required, or additional charges may occur. Valid only for residential customers. Not valid with any other offers, discounts, or on prior sales. Valid for one time use ONLY within 1 year. Expires 8/31/2026.
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$260 OFF Water Heater + 0% Financing

Save on a new water heater installation and finance the rest at 0% with approved credit.

*Discount applies to the purchase and installation of a new standard or tankless residential water heater. Cannot be combined with any other offers, discounts, or promotions. 0% financing subject to credit approval; actual rate and term may vary based on creditworthiness and lender underwriting. Residential customers only. Valid at participating locations. Offer subject to change without notice. Limited time only.
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$89 Whole-Home Electrical Safety Inspection

Comprehensive panel and safety inspection — peace of mind for your family.

*Inspection includes visual assessment of main electrical panel, breaker testing, GFCI/AFCI protection check, and voltage measurement. Does not include code violations remediation, panel replacement, or any repairs, which will be quoted separately with homeowner approval. Cannot be combined with other offers. Residential customers only. Valid at participating locations. Offer subject to change without notice. Limited time only.
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Up to $100 OFF Any Plumbing, Heating, Cooling, or Electrical Repair

Don't go uncomfortable — call us 24/7!

*$300 minimum purchase required, some restrictions apply. Excludes Service Call Fee. Valid only for residential customers. Not valid with any other offers, discounts, or on prior sales. Expires 8/31/2026.
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$150 OFF Whole-Home Surge Protector Installation

Protect your home electronics from power surges — professional installation included.

*Discount applies to whole-home surge protector purchase and professional installation. Excludes panel upgrades or any required panel modifications, which will be quoted separately. Cannot be combined with other offers or promotions. Residential customers only. Valid at participating locations. Offer subject to change without notice. Limited time only.
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Free Emergency Service Visit

restrictions may apply. Expires 8/31/2026.
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Contact us today at (813) 921-2610 — learn why we're the Cornerstone of the Greater Tampa Area for HVAC, plumbing, and electrical services.