Our Promotions

Free

Full Electrical System Evaluation

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$79 Off

Any Electrical Service

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$500 OFF

AC or Furnace Install

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$79

AC or Furnace System Evaluation

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

Free

Second Opinion on Sewer Line Replacement

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$500 Off

Full Sewer Install Replacement

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$100 Off

Complete Water Filtration System

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

Free

Water Pressure Test

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$49

Sewer Line Camera Inspection

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$99

Standard Water Heater Flush
$139 Tankless Water Heater Flush

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

$79 Off

Any Repair

Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

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What To Expect

Discover the Donnelly’s Difference

Professional Services

We show up on time, keep things clean, and listen to what you need. We treat you and your home with the respect it deserves.

Service for All Brands

We can work on all makes and models of HVAC and plumbing equipment.

Trustworthy

​You can count on us to be honest and always do what we say. We communicate clearly, provide our guarantees & warranties in writing, and ensure you understand everything we're doing in your home.​

Experienced Technicians​​

We excel at solving problems with years of experience behind us. We look at today's challenges and future needs to create the best customized solutions.​

Licensed & Insured

​Our technicians are licensed, insured, and background-checked for your peace of mind.​

Professional Services

We show up on time, keep things clean, and listen to what you need. We treat you and your home with the respect it deserves.

Service for All Brands

We can work on all makes and models of HVAC and plumbing equipment.

Trustworthy

​You can count on us to be honest and always do what we say. We communicate clearly, provide our guarantees & warranties in writing, and ensure you understand everything we're doing in your home.​

Experienced Technicians​​

We excel at solving problems with years of experience behind us. We look at today's challenges and future needs to create the best customized solutions.​

Licensed & Insured

​Our technicians are licensed, insured, and background-checked for your peace of mind.​
    About Us
    Our Reviews

    See What Your Neighbors Are Saying

    Great job, on time Very pleasant person. Exceptionally good at diagnosis and explaining the issues. First rate technician
    Thomas McGeehan
    4 days ago
    Ben was on time, courteous, and efficient.
    Thomas Dowd
    4 days ago
    Donnelly was able complete the work on the same day as I called. Member plan for HVAC and electrical was offered as well for full home inspections and discounts. Telephone staff were friendly and extremely helpful. Jeremy and Anthony did a great job! Very professional, fast and friendly. Thank you!
    Dan Robinson
    5 days ago
    Professional friendly and knowledgeable. Discussed features and concerns. Went beyond to explain options for service and was very clear with details of parts and readings. Highly recommended. Finished ahead of schedule
    Mark Rothbell
    5 days ago
    HVAC winter maintenance performed by Amir Smith, he is an excellent technician. I would like to have him to take care of my HVAC next time.
    Wendy Chang
    5 days ago
      Read Our Reviews