Shamrock Heating & Air Conditioning

Business Details

50+ Years

experience

Emergency

services

Trusted HVAC Services in Carol Stream, IL

Shamrock Heating & Air Conditioning has served DuPage and Kane Counties for over 40 years, establishing itself as a leader in the HVAC industry through unwavering standards of excellence. Our team of world-class, certified technicians provides 24/7 emergency services, utilizing innovative infrared camera technology for precise diagnostics. With a commitment to honesty and integrity, we offer comprehensive heating, cooling, and safety inspection services, backed by over ten customer guarantees. Our technicians, recognized by national HVAC organizations, deliver exceptional service supported by advanced training and cutting-edge tools. We prioritize customer satisfaction through competitive pricing, energy-efficient solutions, and personalized consultations.

Our history of industry awards and BBB accreditation underscores our dedication to technical expertise and ethical practices. As a family-owned business, we maintain a customer-first philosophy established at our founding, ensuring transparency and trust in every interaction. Our services include furnace and air conditioning installations, preventive maintenance, and indoor air quality improvements, tailored to meet diverse client needs. Through the Shamrock Discount Club, we offer priority service and cost-saving benefits to our loyal customers. Our environmental initiatives focus on energy efficiency, helping clients reduce utility costs and ecological footprints while maintaining optimal comfort.

Services

Furnace Installation Air Conditioning Repair Safety Inspections Preventive Maintenance Indoor Air Quality Emergency HVAC Service Energy Efficiency Upgrades Carbon Monoxide Detection Evaporator Coil Cleaning Ductwork Fabrication

Details

Year established: 1971

Highlights and features

We offer 40+ years of HVAC expertise in DuPage and Kane Counties
Our technicians are certified in infrared inspection technology
24/7 emergency service with live customer support available
We provide 100% money-back guarantees on new system installations
Financing options available for residential HVAC upgrades

Associations and certifications

BBB
Angie's List

What people say

24/7 emergency service Expert technicians Infrared diagnostics Transparent pricing Reliable service

Website

Update Listing

Services

Furnace Installation

We provide expert furnace installation services featuring energy-efficient models with AFUE ratings of 80+ for optimal home heating. Our certified technicians handle complete system replacements including ductwork fabrication and carbon monoxide detection. Every installation includes our 100% money-back guarantee and comprehensive safety inspections using infrared camera technology to ensure proper operation and indoor air quality.

Air Conditioning Repair

Our EPA-certified technicians offer comprehensive air conditioning repair services for all makes and models. We utilize infrared inspections to diagnose evaporator coil issues and perform freon leak detection following strict EPA guidelines. Emergency repair services are available 24/7 with flat-rate pricing that includes preventive maintenance checks to optimize system efficiency and extend equipment lifespan.

Safety Inspections

We conduct thorough safety inspections using the Inspector infrared video camera system to identify hidden issues in heating and cooling equipment. This technology allows real-time visualization of furnace heat exchangers and evaporator coils, detecting cracks, corrosion, or blockages that could impact safety or efficiency. These inspections are included with every tune-up at no additional charge.

Preventive Maintenance

Our preventive maintenance programs include comprehensive system checks for both heating and cooling equipment. Services feature furnace inspections with infrared diagnostics, evaporator coil cleaning, and efficiency testing. Regular maintenance helps prevent unexpected breakdowns, improves energy efficiency by up to 30%, and extends equipment lifespan while maintaining manufacturer warranty validity.

Indoor Air Quality

We offer complete indoor air quality solutions including humidity control, filtration system installation, and ventilation optimization. Our services address common air quality issues through HEPA filtration systems, UV air purifiers, and carbon monoxide detection. These solutions help reduce allergens, improve respiratory health, and create more comfortable living environments through balanced temperature and humidity control.

People

Tom O'Connor

Owner

Tom O'Connor founded Shamrock Heating & Air Conditioning in 1971 after honorable Navy service. With over 50 years in the HVAC industry, he established the company's core values of honesty and integrity. He continues to lead with a customer-first philosophy alongside his sons Tom Jr. and Will.

Questions

What areas do you service?

We serve DuPage and Kane Counties, including Carol Stream, Villa Park, and surrounding communities with prompt HVAC services.

Do you offer emergency HVAC service?

Yes, we provide 24/7 emergency HVAC service with live phone support and immediate technician dispatch for urgent heating or cooling issues.

What financing options are available?

We offer attractive financing alternatives for new equipment installations, including special programs for qualifying customers to make HVAC upgrades more affordable.

What is the Shamrock Discount Club?

Our Discount Club provides priority service scheduling, 15-20% discounts on repairs and tune-ups, and exclusive member pricing on new equipment installations for 3-year membership periods.

How do your infrared inspections work?

Our Inspector infrared camera system provides real-time video of furnace heat exchangers and evaporator coils, allowing precise diagnosis of cracks, corrosion, or blockages during routine maintenance visits.

Do you offer energy efficiency solutions?

Yes, we specialize in energy-efficient HVAC systems with SEER ratings of 13+ for air conditioners and AFUE ratings of 80+ for furnaces, helping customers reduce utility bills while maintaining comfort.

Reviews (6)

Write a Review

Mathias P.

Dec 09, 2021 Report

I got a quote to replace my humidifier with an Aprilare model 700M. I called the technician and asked if he could install a 700A which is automatic, He said he would do it for the price that he quoted. The 700 series has an internal fan. After he did the installation, the technician showed me what he did. He installed a cheaper and less efficient cross-flow unit, the Aprilaire 600A. He offered me 80 dollars off so I took it to get him to leave but I am annoyed.

I did not get what I want, and I think I overpaid in the end because he replaced an old unit with a similar one instead of installing a new one that would mount on a different duct. I was pleased that they helped me with problems with a furnace that they installed last winter. I am not pleased about the humidifier.

Robert S.

Jun 29, 2021 Report

Good company and service for homes but when I moved into Condo there representative Chris told me they cannot service Condominiums due to jot having correct insurance.

Kourtney N. Ryan Culver

Jun 10, 2021 Report

Thank you for getting us a tech.we know your swamped right now. Shamrock stand behind their work and products they install. Glad we used them.

Carlos G.

Mar 28, 2021 Report

We had moved into our current home literally at the start of the pandemic. The previous owner(s) had done some makeshift fixes to the furnace. We found that we had to replace the furnace. Shamrock's team recommended a furnace size appropriate for our home (didn't just try to recommend the largest/most exp one). They came and installed it without any trouble. The techs were very friendly and professional, and were very mindful of wearing masks and distancing considering it was early in the pandemic.

Chris CFlowens Owens

Feb 03, 2021 Report

Chris came out and let me know my old furnace was on its last leg. He didn't pressure me into a new system, and gave me the option of repair or replacement. The price for replacement was fair and not gouged even though it was the dead of winter and I had no heat. The very next day, I had a new furnace installed in a matter of hours. THANK YOU SO MUCH SHAMROCK. YOU GUYS RULE!

Cliff Hall

Dec 24, 2020 Report

Jared, Luke, and Rob installed a furnace, and ac unit. They were very knowledgeable, polite, and professional. They did a great job! Chris Morgan gave the best bid, with the best equipment. He set up a system that will work for a long time. I am very happy and pleased with Shamrock Heating and Cooling.