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Last Updated: Sat, Feb 18, 2023

An Innovative HVAC Marketing Strategy to Boost Profits

Discover a creative customer retention marketing strategy specifically designed for the HVAC industry that improves profitability, reaches more customers and generates lasting success!

Sigma Voice is a leading provider of 'one-to-many' mass calling and mass texting services. Schedule consultation Get started free

HVAC companies can use automated phone calls in addition to email reminders to generate more service appointments with existing customers.

Automated phone calls can be a more effective way of reaching customers because they are less likely to be ignored or forgotten, unlike emails that may be overlooked or end up in a spam or promotions folder.

Below is a summary of a sample HVAC voice broadcasting campaign to 500 customers that generated 30 service appointments all for under $150.

Caller ID

The Called ID is the main phone number of the HVAC company. This is the phone number that will be displayed on your customer's phone. In many cases, your company name will be displayed as well.


There are 2 recordings that are needed for this type of automated calling campaign. The 'Human Answer' recording and the 'Machine Answer' recording. The quality of the recordings can make a big difference. Please contact us for recommendations.

Human Answer Recording

"Hello, this is [COMPANY] calling to schedule your seasonal service maintenance. Press 1 to connect to our office now to schedule your appointment. If you'd like to be removed from future calls, press 9 now. Thank you for your business."

Machine Answer Recording

"Hello, this is [COMPANY] calling to schedule your seasonal service maintenance. Please call our office at [PHONE NUMBER] to schedule your appointment. Thank you for your business."


Groups are your list of existing customers. Each record can contain first name, last name and phone number.

Call Block List

Our system maintains a list of phone numbers that have opted out of automated calling communication.

Call Broadcast

You'll specify the date and time to send your calls along with the Caller ID, Recordings and Groups. Your Groups are automatically deduped and scrubbed against your Call Block List.

Call Detail Report

The Call Detail Report shows the result of each phone call which includes the date, time, call duration, and call disposition like Human Answer, Machine Answer or No Answer.

Call Summary Report

Human Answers: 183

183 of the 500 outbound calls were answered by a human. This led to 11 incoming customer calls to schedule a service appointment.

Machine Answers: 265

265 of the 500 outbound calls were answered by machines. 19 customers called back after listening to the voicemail message to schedule a service appointment.

No Answers: 52

52 of the 500 outbound calls were not answered by a human or a machine. These phone numbers just kept ringing with no answer.

Remove Requests: 3

There were 3 removal requests from the automated calling campaign. Those 3 phone numbers were added to the Call Block List and will never be called again.


The Sigma Voice HVAC calling campaign generated 30 (11 + 19) new appointments from a customer list of 500 phone numbers.

Let's say an average sale of only $100 x 30 customers. That's $3,000 in repeat business revenue. The cost of the automated calling campaign to 500 customers was only $138.

Learn More

Of course, your results may vary. That's why Sigma Voice offers a completely free trial with no commitment.

If you'd like to learn more about how automated calling could increase profits for your HVAC company, please contact us to speak with a representative.

We're Seeing Stars

Haith Johnson profile picture Verified Customer

Haith Johnson

Retail Store

Absolutely LOVE THIS SERVICE!!! I recommend using Sigma Voice for any growing business!! We have got great responds & is a good way to stay in touch with your customers base! Helps us to turn customers to Loyal Customers to VIP Customers!!!

Emma Otto profile picture Verified Customer

Emma Otto

Retail Store

We have used SigmaVoice for our business for a few years now, and it has been a very good experience. The website is simple, straightforward, and easy to navigate. Customer service is excellent; professional and prompt.

Pedro Hernandez profile picture Verified Customer

Pedro Hernandez

Medical Offices

This service is fantastic. Setting up automated calls is super easy and affordable. I highly recommend it.

Ken Doke profile picture Verified Customer

Ken Doke

Nonprofit Organization

I have been using Sigma Voice for a few years now on a number of campaigns. They have always been reliable and competitive. Their customer service is phenomenal. I highly recommend.

Kristin Taylor profile picture Verified Customer

Kristin Taylor

Senior Living

Sigma Voice was so easy to set up. I needed to get an immediate message out to my 60+ family members. It’s affordable, the reports are amazing, and the customer service is beyond what I expected on a Sunday afternoon. Highly recommended!

Mark Hamilton profile picture Verified Customer

Mark Hamilton

Nonprofit Organization

Sigma Voice exceeded our expectations for our call out needs. When we needed changes made they were happy to do so and performed changes in a timely manner. I highly recommend Sigma Voice.

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