Trusted HVAC Service Across Macomb County, Michigan

Expert HVAC service for all 27 Macomb County communities. Fast response times, specialized expertise, and honest pricing since 2004.

Serving Macomb County Families for Over 30 Years

For over 30 years, Macomb County families have relied on 911 Mechanical for honest, professional HVAC service without the runaround. As Michigan’s third most populous county (nearly 875,000 residents), this region presents unique heating and cooling challenges: from lakefront humidity in St. Clair Shores to the diverse housing stock spanning six decades of construction across 27 communities.

Whether your home is a 1950s ranch in Warren, a modern two-story in Chesterfield Township, or a lakefront property in Harrison Township, we understand the specific HVAC needs of your community. Located centrally in Macomb, we provide fast response times to every corner of the county, 24 hours a day.

As a family-owned company rooted here since 2004, we’re not just your HVAC contractor—we’re your neighbors.

Why Macomb County Homeowners Choose 911 Mechanical

Fastest Response: 15–35 minute response times to all county communities due to our central Macomb location.
No Commission Sales Tactics: Our hourly-paid technicians ensure honest recommendations focused on repairs over replacements.
30+ Years of Local HVAC Experience: We’ve serviced homes in every municipality, understanding each area’s unique challenges.
Specialized Expertise: Skilled with both lakefront humidity control and aging infrastructure upgrades.
Direct Employment Only: No subcontractors—every technician is a trained 911 Mechanical employee.

What Sets Us Apart

NATE Certified

Licensed & Insured

Lennox Authorized

30+ Years Experience

Community Commitment

💙 Feel the Love: Giving Back to Our Neighbors

At 911 Mechanical, we are proud partners in Lennox’s “Feel The Love” program, a heartwarming initiative that provides free heating and cooling systems to deserving residents throughout our service area. Lennox donates the equipment, and we donate our time and labor.

Know someone deserving? Nominations open in May 2026!

Understanding Macomb County’s Diverse HVAC Needs

Macomb County’s 27 municipalities break down into distinct zones, each presenting unique HVAC challenges:

Zone	Communities (Examples)	Typical HVAC Challenges	Estimated Emergency Response
Central Belt	Warren, Sterling Heights, Clinton Twp., Roseville	Aging infrastructure (median home built 1970), low-efficiency furnaces, need for high-efficiency upgrades.	15–20 minutes
Lakefront	St. Clair Shores, Harrison Twp., New Baltimore	Constant humidity, mold prevention, and superior dehumidification required.	20–25 minutes
Northern Zone	Macomb Twp., Shelby Twp., Washington Twp.	Newer construction, multi-zone systems for large homes, complex zoning issues.	25–30 minutes
Urban Core	Eastpointe, Fraser, Center Line	Compact lots, space-constrained installations, noise consideration for close neighbors.	15–20 minutes

Complete HVAC Services County-Wide

Core Services

Furnace Installation & Replacement: Properly sized for your home’s construction era (from 1960s ranches to modern colonials).
Air Conditioning Installation: Expert AC replacement with essential humidity control.
Emergency HVAC Service: Available 24/7/365 across all 27 communities.
Zoning Systems: Multi-zone comfort control for larger homes.

Specialty Services

Air Duct Cleaning & Sealing: Critical for the county’s aging housing stock (median home built 1970).
Indoor Air Quality Solutions: Humidifiers (winter), dehumidifiers (lakefront/summer), air purifiers.
Smart Thermostat Installation: Modern controls for today’s connected homes.

Deep Dive: Lakefront Humidity & Efficiency

Protecting Your Home from Lake St. Clair Moisture

Why Lakefront Homes Need Different HVAC:

Lakefront communities (like St. Clair Shores and Harrison Township) face unique challenges due to constant humidity from Lake St. Clair. This moisture infiltrates home ductwork, creating conditions for mold and mildew growth.

Lakefront homes require:

AC systems with superior dehumidification capabilities.
Regular professional duct cleaning to prevent mold buildup.
Whole-home dehumidifiers for optimal comfort and property protection.

Upgrading the Aging Housing Stock

Given that the median Macomb County home was built in 1970, many homeowners are still running inefficient furnaces (60–80% AFUE).

The Benefit: Upgrading to modern 95–99% AFUE furnaces often sees the investment pay for itself within 6–8 years through lower utility bills, while ensuring reliable heat during Michigan’s extremes.

Call 586-247-7300 for a Consultation

What Macomb County Customers Say

“Jim who provided my estimate was great. He won my business by providing the best price and best warranty of all estimates I received. The team that installed my system was on time, professional, and did a great job.”

“We called on a Saturday when temps were in the high 90s for my 81-year-old mother and they were out so quick and solved the issue without taking advantage of a senior citizen!”

Frequently Asked Questions

Do you really service all of Macomb County?

Yes! We provide complete HVAC service to all 27 municipalities. Our central Macomb location allows us to reach any county address within 15–35 minutes for emergency service.

What's your emergency response time to my area?

Central (Warren, Clinton, Sterling): 15–20 minutes; Lakefront (St. Clair Shores, Harrison): 20–25 minutes; Northern (Chesterfield, Macomb Twp.): 25–30 minutes; We guarantee under 40 minutes county-wide for emergencies.

Why do lakefront homes need different HVAC considerations?

Lakefront homes require AC systems with superior dehumidification and often whole-home dehumidifiers to control the constant moisture from Lake St. Clair, which prevents mold and mildew growth.

How much does furnace installation cost in Macomb County?

Costs typically range from $3,500 to $5,500 for smaller homes and $5,500 to $9,000 for larger homes (95%+ AFUE systems). Financing and our $200 installation discount make the investment affordable.

Lennox Premiere Dealer

We offer a full range of high-efficiency systems suitable for all Macomb County homes, including up to 99% AFUE furnaces and 20+ SEER AC systems with advanced zoning capabilities.

Call or Text Now: 586-247-7300