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The K&D Blog

Straight answers from the people who fix it

Guides written by our plumbers and HVAC techs for Central Ohio homeowners. No scare tactics, just what we'd tell a neighbor over the fence.

Recent posts

An outdoor heat pump unit beside a house in winter

Is a heat pump right for an Ohio house?

Cold-climate heat pumps have changed a lot in ten years. Kenji walks through how they handle our winters, what dual-fuel means, and who should (and shouldn't) make the switch.

By Kenji Watanabe · September 9, 2025

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A wall-mounted tankless water heater

Tank vs. tankless: which water heater should you buy?

Endless hot water sounds great. But cost, gas lines and our hard water all matter. Agnes lays out the honest trade-offs.

By Agnes Kowalczyk-Reyes · March 18, 2025

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A gas furnace in a basement with its panel open

What that furnace noise means

Squeals, clicks, rattles, booms and whistles: Dana's field guide to the sounds a furnace makes, which ones can wait, and which mean shut it off now.

By Dana Kowalczyk · October 14, 2024

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A hand turning a main water shut-off valve

How to shut off your water (before you need to)

Every adult in your house should know where the main shut-off is. Here's how to find it, how to turn it, and what to do when it won't budge.

By Agnes Kowalczyk-Reyes · January 8, 2024

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A frosted copper pipe in a cold crawlspace

The frozen pipes checklist

Stan has thawed more frozen pipes than anyone we know. His checklist for keeping them from freezing, and what to do if they do.

By Stan Kowalczyk with Terrence Booker · December 4, 2023

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Got a question you'd like us to write about? Email hello@kdplumbing.example. If we get asked something three times, it becomes a blog post.

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