Buying Guides for Every Water Product

In-depth, unbiased guides that walk you through sizing, technology choices, installation, and total cost of ownership for every water product category.

Water Heaters

Water Heater Installation Cost : What Plumbers Actually Charge

Installation costs vary by 4× — from $800 for a like-for-like swap in an easy basement to $3,500+ for a complicated retrofit. The variation is not random; it is driven by five specific cost drivers. This guide breaks down what each driver actually adds, what the right price should be for your situation, and where contractors mark up most aggressively.

12 min read · Updated May 2026
Water Heaters

Tank vs Tankless Water Heater: Decision Guide

Tankless is not always better. It is better for some households, worse for others, and roughly the same for a surprising number. This guide breaks down the five real differences that actually matter for the decision — including the two situations where tank is the right answer, and the one undiscussed cost (recirculation) that nobody mentions in the showroom.

13 min read · Updated May 2026
Water Heaters

Gas vs Electric Water Heater: The Real Operating Cost Difference

Gas is cheaper to run almost everywhere — until you factor in the install cost difference, the venting requirements, and what happens during a winter power outage. This guide compares the two fuel sources on the four dimensions that actually decide it: up-front cost, monthly cost, install complexity, and a fifth one nobody mentions until they're already committed.

10 min read · Updated May 2026
Water Heaters

How to Size a Water Heater: First-Hour Rating, Not Tank Size

The number on the side of the tank — 40 gallons, 50 gallons — is not the spec that determines whether you run out of hot water in the morning. The spec that matters is First-Hour Rating (FHR) for tanks, or GPM-at-rise for tankless. This guide shows how to size both correctly for your household, including the math we use ourselves when we replace a heater for a family member.

11 min read · Updated May 2026
Water Heaters

Heat-Pump Water Heater: What It Is, How It Works, and Whether It Fits Your House

A heat-pump water heater costs three times less to run than electric resistance and beats every other water heater type on lifetime operating cost in most US climates. It also needs 750 cubic feet of air around it, exhausts cool air into that space, and makes a quiet humming sound. This guide covers what it is, what it costs, and the specific installation realities that determine whether one will work in your house.

11 min read · Updated May 2026
Water Heaters

How to Flush a Water Heater (and Why You Should Every Year)

A water heater flush removes the mineral sediment that accumulates at the bottom of the tank — sediment that shortens the unit's lifespan, increases your energy bill, and creates that popping sound you might already be hearing. This guide walks the flush procedure for both gas and electric tank heaters, plus the differences for tankless.

9 min read · Updated May 2026