Serving Whatcom, Skagit & Snohomish Counties Across Northwest Washington

Doing the right thing since 1940
Reliable hometown service when you need it most.

Air Conditioning Installation and Replacement in Lynden, WA

Heating, plumbing, and electrical service from the local team Whatcom County has trusted since 1940.

Heating or Plumbing Emergency? We answer around the clock.

24/7

Emergency Heating & Plumbing Support

Trusted

For Generations

Licensed

& Insured

Financing

Available

Parts & labor

Warranties

24/7

Emergency Heating & Plumbing Support

Trusted

For Generations

Licensed

& Insured

Financing

Available

Parts & labor

Warranties

Request Service

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What Your Neighbors Are Saying About Us

Barbara W.
★★★★★
We had a new furnace and AC unit installed 5 years ago by Lynden Sheet Metal. It was very professionally done, and has worked great. Dan has been our service man every year, and we request him for consistency. This year, he had an apprentice named Abby. She was very pleasant and attentive. They always feel like family when they are here. We would recommend Lynden Sheet Metal to anyone that asked.
Ashley V.
★★★★★
I've used Lynden Sheet Metal for a home furnace replacement, AC install, and quick electrical work. They have always been so considerate, timely, and professional in their work. Their reception/scheduling staff are always so kind and quick to respond. In each case, they were in our house working within 48 hours of a call, regardless of how much work was needed. I'm planning to use them as often as possible going forward!
Therese W.
★★★★★
Great experience with Lynden Sheet Metal. They were fast, efficient and their pricing was what I expected with no surprises. Their customer service was excellent. Would definitely recommend them.

Is It Time for a New AC System?

Most AC systems last around ten to fifteen years, though how well one has been maintained plays a big role too. If your system is approaching that age and needing repairs more often, replacement may end up being the more cost-effective choice.

Rising energy bills are another clue. Older systems lose efficiency over time, and a new unit can often cool your home for less. If your current AC struggles to keep up on warm days, cycles constantly, or requires frequent repairs, it may be time to start looking at replacement options rather than sinking more money into an aging unit.

How We Handle Your AC Installation

We start by evaluating your home, including its size, layout, and existing ductwork, to recommend a system that’s properly sized for your space. An oversized or undersized unit won’t perform well no matter how good the equipment is, so getting this step right matters.

From there, we walk you through your options in plain language, including efficiency ratings and what each choice means for your monthly bills. Once you’ve decided, our team handles the installation carefully, testing the system thoroughly before we consider the job finished. We also haul away your old unit so you don’t have to deal with it.

When You Need an AC Replacement Fast

Sometimes a system fails without warning, and waiting isn’t really an option. If your AC goes out during a heat wave or stops working entirely, our team can move quickly to get a new system installed and your home comfortable again. We understand that a home without cooling can become uncomfortable fast, especially for kids, older family members, or anyone with health concerns.

Why Homeowners Trust LSM Heating, Plumbing, Electric

Bellingham and Lynden families have relied on us for their heating, cooling, electrical, and plumbing needs for generations, and installation decisions are no exception.

We’d rather give you the straight answer than push you toward the biggest sale. That’s how we’ve built trust in this community for as long as we have.

Save With PSE Heat Pump Rebates

Eligible heat pump projects may qualify for a $1,500 PSE rebate, or up to $2,400 through PSE Efficiency Boost for certain electric-resistance conversions and eligible heat pump replacements.

Frequently Asked Questions

How long does an AC installation take?

Most installations are completed in a single day, though larger or more complex jobs may take longer.

If your system is older and needs frequent repairs, replacement is often the more cost-effective long-term choice.

The right size depends on your home’s square footage, layout, and insulation. We evaluate this during our visit.

Newer systems are generally more efficient, which often leads to lower monthly energy costs.

We work with a wide range of air conditioning brands and equipment manufacturers. Some of the major brands we work with include Rheem, American Standard, Lennox, Mitsubishi Electric, Bosch, Midea, and Hisense, among others. Our team can help you choose the right system for your home, comfort needs, and budget.

HomeCare Plan

Protect Your Home with Less Stress

Keep your heating, cooling, and other enrolled home systems maintained while enjoying added benefits throughout the year. HomeCare members receive priority scheduling, annual maintenance for enrolled equipment, and valuable savings when service is needed.

Annual maintenance

for enrolled systems

Priority scheduling

when you need service

Earn credit toward

a future system replacement

HomeCare Starts at

$15/month

One Simple Plan

Less Stress

September Special

Heating Maintenance for $79 with HomeCare

Join LSM HomeCare and get maintenance on your first qualifying piece of equipment for $79. Not ready for HomeCare? You can still receive $50 off maintenance on one qualifying piece of equipment.

Option 1 — Join HomeCare

$79 Flat Rate

FIRST QUALIFYING PIECE OF EQUIPMENT

Option 2 — No HomeCare

$50 Off

ONE QUALIFYING PIECE OF EQUIPMENT

Call and schedule by September 30. Your appointment can happen later.

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