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Heating Installation & Replacement in Spencer & Worcester County

Heating Systems We Install

When it’s time for a new furnace or boiler, we make the process simple. We install efficient heating systems that keep your home warm and your energy bills in check—no shortcuts, no surprises.

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Furnace Replacement

If your gas or oil furnace is more than 15 years old, needs constant repairs, or just can’t keep up, we’ll help you replace it with a high-efficiency model that fits your home and budget.

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Boiler Replacement

We remove and replace aging hot water or steam boilers in homes throughout Spencer, Leicester, and North Brookfield. We install systems designed for New England winters and older homes with radiator heat.

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New Heating System Installation

Building a home or finishing an addition? We install complete heating systems from the ground up—ductwork, piping, thermostats, and all.

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Oil-to-Gas Conversions

If you're switching from oil to natural gas, we’ll coordinate the change, install new lines, and replace your heating system with one that’s cleaner and more efficient.

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Zoned Heating Systems

Want better control over different areas of your home? We install zoned heating solutions so each space stays comfortable without wasting energy.

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Why Professional Installation Matters:

A System That Actually Fits Your Home

We don’t oversize or undersize. We calculate the proper system load based on your home’s square footage, insulation, and layout.


Efficiency That Pays Off

We install ENERGY STAR® rated systems that lower your monthly bills and qualify for available rebates or incentives.


A Clean, Code-Compliant Install

No crooked ductwork. No loose connections. We install everything by the book so it runs safely and smoothly from day one.

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You want better air quality and energy efficiency

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When To Call For Help

CONTACT US TODAY
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Your system is over 15 years old and struggles to heat evenly

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You’re facing repeated repairs and rising energy costs

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You’re upgrading part of your home or adding square footage

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You’re switching from oil to gas

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You’re building or remodeling and need new heating installed

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Heating Installation Questions? We’ve Got Answers.

  • How long does it take to install a new heating system?

    Most furnace replacements take a day or less. Boilers and full system installs may take longer. We’ll give you a timeline up front and stick to it.

  • Do you install both gas and oil systems?

    Yes. We install and replace gas and oil furnaces and boilers, depending on your fuel source and home setup.

  • Can I replace my heating system in the summer?

    Yes—and it’s a great idea. You’ll avoid the winter rush and have plenty of time to choose the right system without pressure.

  • Will I save money with a new system?

    Likely yes. New systems are more efficient and often cut heating bills significantly, especially if your current unit is outdated.

  • Do you help with rebates or Mass Save incentives?

    We do. We’ll let you know what programs are available and help you complete the paperwork if applicable.

  • What brands do you install?

    We work with trusted brands and install systems we know will last. If you have a preference, we’ll help you choose the best fit for your home.

  • Can you install a system in a home without existing ductwork?

    Yes. For homes without ducts, we often install boiler-based heating or can explore ductless mini-split systems depending on your needs.

Why Choose MIKE LAMBERT'S PLUMBING & HEATING INC?

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Local, Family, and Christian-owned

We’re based right here in Spencer and have helped families all across Worcester County for years. When you call us, you’re talking to neighbors—not a big chain.

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Done Right the First Time

We don’t just patch up problems. We fix them properly, using quality parts and proven techniques that stand the test of time.

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Respectful

& Clean

We wear clean uniforms, explain the work clearly, and treat your home like our own. When the job’s done, we clean up and make sure you’re satisfied.