Keeping Lake County comfortable since 1948.
Modern Heating & Plumbing provides residential heating, cooling, and plumbing across Lake County.

1948
Serving since
A+
BBB rating
Trane, Navien, AprilAire dealer
Se habla español
Modern Heating & Plumbing has kept Lake County homes comfortable since 1948. Three generations later, we still do it the same way: show up when we say we will, do it right, and stand behind it. Furnaces, boilers, heat pumps, air conditioning, water heaters, and everyday plumbing, for more than forty towns across Northern Illinois and into Southeast Wisconsin.
We're a Trane, Navien, and AprilAire dealer, BBB A+ accredited, and part of Service Solutions Unlimited. Gold Star Savings members go to the front of the line on no-heat and no-cool calls, and get the seasonal tune-ups that keep small problems small.
Book a visitHeat in January. Cool air in July. The same crew behind it since 1948.
1948
In business since
75+
Years serving Lake County
40+
Towns covered
A+
BBB rating
Our team
The people behind Modern Heating.

Thomas Locascio Sr.
President / Partner
Thomas Locascio Sr.
President / Partner
Thomas leads a diversified group of companies specializing in construction, electrical, plumbing, HVAC, and facility services, providing the strategic leadership that drives growth across every brand. Throughout his more than 25-year career, he has found the greatest reward in the relationships he has built with employees and customers alike.
Outside of work, he enjoys boating, golf, and spending time with his family and his three dogs: two Frenchies and a golden retriever.

John Machay
President / Partner
John Machay
President / Partner
John is a partner in the group alongside Thomas, overseeing finance and accounting across every company. He maintains financial transparency and stability across the companies, so each brand can invest in its people and grow with confidence.

Jenny Howlett
Account Executive
Jenny Howlett
Account Executive
Jenny serves as a trusted point of contact for clients across the SSU brands, making sure every customer's needs are met day in and day out. Throughout her 14 years of experience, she has found the greatest reward in helping her customers succeed.
Outside of work, she loves to travel and enjoy fine dining. A fun fact: she married her high school sweetheart.

Jackson Kipp
Sales Representative
Jackson Kipp
Sales Representative
Jackson handles residential and commercial sales for Modern, Allied, and TCL, developing new business, meeting with customers and property managers, and preparing estimates and proposals. He studied marketing at Carthage College in Kenosha, Wisconsin, where he built the foundation in sales and customer relationships that he brings to the team today. He enjoys building relationships with new people and identifying solutions tailored to each customer's needs.
Outside of work, he enjoys golfing and fishing. Something many people may not know: he is originally from Mongolia.

Lisa Isaac
Operations & Office Management
Lisa Isaac
Operations & Office Management
Lisa oversees daily operations at Modern, coordinating projects, supervising personnel, and managing office administration to ensure field and office work stay on schedule. With 27 years of experience, she values the variety each day brings.
Away from work, she treasures time with family, whether traveling or enjoying everyday moments. A fun fact: she once completed a 210-mile bicycle ride in three days.

Darren Stacy
Project / Fleet Manager
Darren Stacy
Project / Fleet Manager
Darren manages projects and oversees fleet operations across the SSU brands, monitoring vehicle status to ensure crews have the equipment and resources needed to complete their work. With 20 years of experience, he finds the greatest reward in the teams he works alongside.
Outside of work, he enjoys walking his dog, hitting the gym, and spending time with family. He is also a proud veteran!
