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Frequently Asked Questions

Our Guardian Experts have come across many great questions over the years. We though it would be helpful to include those questions & answers here on our website. If you have a great question no listed here, please don’t hesitate to contact us today.

Heat Pump Water Heater

Up to $250

Improve energy efficiency and receive up to $250 in rebates through our Home Energy Improvement Program (HEIP) by replacing your water heater. See how you can participate as a single family  residential customer. Apply now

Home Energy Assessment

Up to $75 – $150

You could receive up to $150 in rebates by having your home assessed for its energy efficiency performance through Georgia Power’s Home Energy Improvement Program (HEIP). Discover how you can participate as a single family or multifamily residential customer. Apply now

Install a Smart Thermostat

50% off up to $75

Receive up to a $75 rebate when you purchase a Smart, Wi-Fi enabled thermostat from the Georgia Power Marketplace and have it installed by Guardian. Learn more about available rebates through HEIP and how you can participate as a single family or multifamily residential customer.

EV Charger Install Rebate

$250 for a Level 2 charger

Georgia Power customers may be eligible to receive up to a $250 rebate for installing a Level 2 Charger in their home. Submit a rebate request form with a copy of paid installation and charger invoice(s) within 60 days after the EV charger has been installed. To learn more about the rebate program, click here. For detailed terms & conditions, click here.

Attic Insulation

Up to $250

Through Georgia Power’s Home Energy Improvement Program (HEIP), customers can receive up to $250 for installing new attic insulation. Learn more about available rebates through HEIP an how you can participate as a single family residential customer. Apply now

Duct Sealing

Up to $300

Receive up to $300 in rebates by sealing your home’s duct work with our Home Energy Improvement Program (HEIP). Find out how you can participate as a single family residential customer.

In some cases, to participate in the rebate program pre-verification of your existing gas equipment and a final verification of the newly-installed, energy-efficient, electric equipment is required. For details about the program and to arrange for verification, contact Marietta Power Marketing Administrator Lori Herrin via email or by phone at 770-794-5182.

Heat Pump Rebate

Receive a $150 rebate check when you replace an existing gas heating system in your home by installing a new electric or dual-fuel heat pump. See the incentive guideline (PDF)s for more details.

Toilet Rebate

Receive a one time rebate when you replace existing high flush toilets with 1.28 gallon per flush (gpf) toilets or less.  See the application (PDF) for more details.

Water Heater Rebate

Receive a $250 rebate check when you replace an existing, gas-water heater and install a new, electric-water heater. See the incentive guidelines (PDF) for more details.

Water Heater & Heat Pump Rebate

Receive a $500 rebate check when you replace an existing gas water heater and heating system as described above at the same time. See the incentive guidelines (PDF) for more details.

Energy Efficiency Rebate

Receive rebates for the purchase of Energy Star appliances, programmable thermostats, or water heater blankets. See the application for more details.

Using electricity or propane for heat or hot water?

Chances are you’re paying too much! Earn hundreds of dollars in rebates by converting to a new natural gas furnace or water heater.

Atlanta Gas Light

The 2020 $50 Cobb EMC Rebate-HVAC Tuneup program begins March 1. Vouchers are available while supplies last.

Cobb EMC’s HVAC Tuneup rebate program encourages our members to schedule annual pre-season checkups with a qualified contractor to ensure HVAC systems are operating efficiently. A yearly tuneup is one of several steps that you can take to increase the efficiency of your heating and cooling system. Go here for more details.

Smart Thermostat Upgrade -Cobb EMC members can save $25 on smart thermostat installation.  

A smart thermostat automatically adjusts to energy-saving temperatures (78ºF in summer and 68ºF in winter) to help you save money on your heating and cooling bills. Many are also controlled from your smartphone so you can adjust the temperature while on the go or away on vacation.

One of the best ways to save energy when Cobb EMC calls peak hours is to use a smart thermostat to adjust the temperature in your home.

$25 Credit is given directly by Guardian off of your new Nest, Ecobee or Honeywell smart thermostat installation. Just show us your bill!


ENERGY STAR Smart Thermostat Program: GreyStone members who own their homes and install an ENERGY STAR smart thermostat, or install an ENERGY STAR rated HVAC system with a smart thermostat will be eligible to receive a $100 rebate.

Gas to electric conversion rebates: Some residential members may be interested in converting gas water heaters and furnaces to electric due to rising costs of natural gas and propane. GreyStone has two rebates available for members who convert from gas to electric.

  • If the requirements are met the member becomes eligible for either a $200 or $400 rebate after converting a water heater from gas to electric. Also, members become eligible for either a $300 (Non Energy Star Rated) or $600 (Energy Star Rated) rebate when changing from gas heat to an electric heat pump or dual fuel.

To request a gas to electric conversion rebate, the customer will need to complete this form.

Propane Water Heater Replaced with Electric

  • Rebate of $500 for water heater with 12 year or better limited warranty
  • Rebate of $300 for water heater with less than 12 -year limited warranty
  • Rebate of $500 for Marathon or Heat Pump water heater

For more information, please go to the following website https://www.greystonepower.com/rebates.

We offer a variety of flexible financing options for your home service needs. With a quick application, your approval will allow us to customize your payment options. Low monthly payments and competitive terms are always available.

Yes! We always offer Free In Home HVAC Replacement Estimates. Call us for a second opinion without anything to lose. This is an opportunity to get to know us and see the reason we are 5 star rated and have so many loyal customers!

Your emergency is our emergency. Give us a call and we will do our very best to make sure that we protect your time, money and home as fast as we can. We know the stresses of having a broken HVAC system, or being without hot water. Most often we are available same day to service your home.

Your home is our home. We will protect not only our feet but also traffic ways and work area. The job site is always left better than when we arrived. Integrity and respect in all we do is not just something we say, but engrained in all of our practices.

Yes! We are licensed, bonded & insured. There is no other way to protect our customers and our experts than having the proper insurance. We’ve got you covered.


We are so glad we chose Guardian to service our HVAC system. We were having troubles and the unit was just not working to keep our home at the temperature we needed. Guardian came to our home and provided us with easy solutions and really did Save our Day.

– Kristy N.

HVAC Checklist

If you suspect that you have an issue with you HVAC, we recommend that you call us today. Here is a checklist of symptoms to look for.

Download Checklist

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