Blog
Guides from Certified Inc
Straight answers to the questions we hear most, written for our own customers.
September 15, 2026 · 4 min read
What a sheet metal shop is for
Most shops our size buy fittings off a shelf. We build the ones a job actually needs.
September 15, 2026 · 3 min read
Mini-splits in a house that never had ductwork
Which system is right depends on the room, not just the house.
September 15, 2026 · 4 min read
The frozen sewer lateral, and what actually thaws one
It does not look like a burst pipe. It looks like every drain in the house backing up on the coldest week of the year.
September 15, 2026 · 4 min read
Hard water, orange stains and blue-green joints: reading what your well is doing to the house
Three symptoms in three different rooms are usually the same well telling you three different things.
September 15, 2026 · 4 min read
Why a furnace usually quits on the coldest night of the year
The failure is rarely instant. Here is what the furnace is telling you two weeks before it quits, and what to check yourself before you call.