Independent · Source-backed · Re-rated
Backyard chicken gear, chosen with research — not hype
Coop Criteria publishes buying guides for coop, door, feeder and waterer decisions. Every comparison shows its sizing math and its sources, re-rated each season against real keeper experience. No free products, no paid placements.
Start with the Coop Size Calculator Winter prep: heated waterers
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Best Heated Chicken Waterers (2026): Keep Water Unfrozen Without the Fire Risk
Heated waterers and heated bases compared for winter chicken keeping — capacity matching, thermostat behavior, GFCI electrical safety, and the budget setup that often beats all-in-one units.
Best Chicken Coop for 6 Chickens (2026): Researched Picks & Real Sizing Math
Six coops and kits compared for a 6-hen flock — with the 4 sq ft rule applied to every maker's claim, plus the sizing math, ventilation and predator details that actually matter.
Best No-Waste Chicken Feeders (2026): Treadle vs Port, With the Payback Math
No-waste feeders compared on real refill intervals and waste savings — including the payback math for a treadle feeder that nobody else publishes.
The Capacity Dataset
Six popular coops' box claims re-rated against the 4 sq ft standard — all six overstate. Check any coop yourself.
Coop Size Calculator
Coop floor, run space, roost length, nest boxes and water needs for your flock size.
Feed Cost Calculator
Annual, monthly and per-dozen-egg feed costs — including the waste your feeder adds.
All guides
Topics:Coops & SizingWater & WinterFeeders & Feed CostsChicks & BroodingAutomatic Coop Doors
Best Automatic Chicken Coop Doors (2026): Omlet, Run-Chicken & Budget Options Compared
Automatic coop doors compared on safety, battery life, raccoon resistance and winter reliability — with the installation details that decide whether a door actually protects your flock.
Best Chicken Coop for 4 Chickens (2026): The Flock Size Every Box Claims to Fit
Four coops honestly re-rated for a 4-hen flock — including Wirecutter's starter pick — plus the space math, the expandability trap, and which budget kit actually fits.
Best Chicken Coop for 6 Chickens (2026): Researched Picks & Real Sizing Math
Six coops and kits compared for a 6-hen flock — with the 4 sq ft rule applied to every maker's claim, plus the sizing math, ventilation and predator details that actually matter.
Best Chicken Coop for Cold Climates (2026): Winter-Rated Picks & the Moisture Math
Cold-climate coops compared on what actually fails in winter — trapped moisture, drafts, crowded floors — with maker capacity claims re-rated for full-time winter occupancy.
Best Heated Chicken Waterers (2026): Keep Water Unfrozen Without the Fire Risk
Heated waterers and heated bases compared for winter chicken keeping — capacity matching, thermostat behavior, GFCI electrical safety, and the budget setup that often beats all-in-one units.
Best No-Waste Chicken Feeders (2026): Treadle vs Port, With the Payback Math
No-waste feeders compared on real refill intervals and waste savings — including the payback math for a treadle feeder that nobody else publishes.
Chicken Coop Capacity Claims vs. the 4 sq ft Standard: Six Popular Models Re-Rated
We re-rated six popular coops' capacity claims against published floor dimensions and the 4 sq ft standard. All six overstate. The dataset, method and findings inside.
Heat Plate vs Heat Lamp for Chicks: The Brooder Decision, With the Electricity Math
Heat plates and heat lamps compared on the fire mechanism, the temperature schedule chicks actually need, and a six-week electricity cost most brooder comparisons skip.
Heated Chicken Waterer vs Heated Base: Which Winter Setup Actually Wins
The integrated heated waterer and the heated base + metal fountain compared on temperature floors, winter electricity, refill weight and failure cost — with the compatibility trap most guides skip.
How Much Space Do Chickens Need? Coop & Run Sizing That Actually Works
The 4 sq ft coop and 8–10 sq ft run rules explained, with a per-flock-size table, breed adjustments, roost and nest box math — and why coop boxes lie about capacity.
Why trust these guides
Documented research
Manufacturer specs, extension-service sizing standards and large keeper communities — every claim points to a source. See the capacity dataset for the method in action.
Honest sizing
We re-rate every coop against the 4 sq ft-per-bird standard, not the marketing claim. Expect a smaller number than the box says.
No free gear
We take no free samples, no sponsored posts and no paid placements — and we say plainly what we haven't touched. The full rules live in our methodology.