Which water heater should you buy? Gas, electric, or heat-pump?

Before you compare models, you have to pick a type — and your house mostly decides that for you. Answer three quick questions about your fuel line, whether you rent or own, and your household size. We point you to the right category, then drop you straight into the ranked models with the filter already applied. We don't pick the exact unit for you — the Value Score does, in the open.

✓ recommendations map to specs verified against DOE / ENERGY STAR ratings

1Do you have a natural-gas line where the heater goes?

Gas needs an existing gas line and venting. No gas hookup (or you're all-electric)? That rules gas out — and that's fine, the electric options are excellent now.

Yes — I have gas ✓

A gas line runs to the heater location, or one can be added. → Go to Question 2 (gas branch).

No — electric only

No gas line, or you'd rather not deal with gas/venting. → Go to Question 3 (electric branch).

2Gas branch — how big is your household?

On gas, the split is simple: big simultaneous demand favors a high-recovery condensing gas unit; a smaller or budget install can take a standard gas tank.

4+ people / lots of back-to-back showers →

Condensing gas: highest first-hour + fastest recovery (100–167 gal/hr). Never runs cold on a busy morning. Opens the gas ranking, sized for a big family.

1–3 people / budget install →

Standard or condensing gas balanced on value — cheap to buy, recovers fast enough for a smaller home. Opens the gas ranking, balanced.

3Electric branch — do you own the home, and is there a warm, roomy spot?

This is the big fork. A heat-pump (hybrid) is 3–4× more efficient and slashes running cost — but it costs more up front, needs a warm ~700+ cu-ft space (it cools/dehumidifies the room), and pays back over years, so it suits owners. A plain electric-resistance tank is the cheapest to buy and install and fits anywhere — ideal for renters, tight closets, or lowest up-front cost.

I own + have space + want lowest bills →

Heat-pump / hybrid: UEF 3.5–4.2, biggest lifetime savings, often utility rebates + tax credits. Opens the heat-pump ranking.

Renting / tight space / lowest up-front →

Standard electric: cheapest to buy (~$580–650), no venting, fits any closet. Opens the electric ranking, by best value.

Not sure yet? Start with the general best-value ranking.

Can't answer the questions cleanly, or want to see the whole field at once? Open the full tool with every fuel type in view and the balanced weighting — then filter and drag sliders as you learn what your home needs.

See all water heaters, ranked by value →

At a glance — the four types side by side

Type	Efficiency (UEF)	Up-front	Best for
Heat-pump / hybrid	3.5 – 4.2	$1,800 – 2,700	Owners, warm space, lowest running cost	Rank these →
Condensing gas	~0.88 – 0.89	$1,900 – 2,000	Big families on natural gas, fast recovery	Rank these →
Standard gas	~0.60	$650 – 800	Budget gas install, simple & cheap	Rank these →
Standard electric	~0.90 – 0.95	$580 – 650	Renters, tight spaces, lowest buy price	Rank these →

Below: context & how-to-read — not a verdict

Why the type comes before the model

There is no single "best water heater." The right unit for a gas-plumbed family of five is the wrong unit for a solo renter on electric in a small closet. Four things move the answer: fuel availability (what your home is plumbed for), ownership (a heat-pump's multi-year payback rewards owners, not short-term renters), install space (heat-pumps need a warm, open room; gas needs venting), and how you weigh up-front cost versus lifetime running cost. Pick the type first, then let the numbers rank the models within it.

The four types, plainly

Heat-pump / hybrid — Moves heat from the air into the water instead of generating it, hitting UEFs of 3.5–4.2 (three to four times a plain electric tank). Highest up-front cost, needs a warm roomy space, but slashes the operating bill and often qualifies for utility rebates and federal tax credits. Best long-run value if you own and have the space.
Condensing gas — Squeezes extra heat out of the exhaust (UEF ~0.88) and recovers water extremely fast (100+ gal/hr). The pick for a big household on natural gas that needs endless back-to-back hot water.
Standard atmospheric gas — Cheap and simple (UEF ~0.60) but wastes more heat up the flue. Fine for a smaller home or a budget install where gas is already present.
Electric resistance — Cheapest to buy and install (no venting, no gas line, UEF ~0.90) but the priciest to run per gallon where electricity is expensive. The easy answer for renters, tight closets, and lowest up-front spend.

How we rank within each type

Once you land on the tool, every unit is scored on first-hour rating, UEF efficiency, tank capacity, recovery rate, and warranty, normalized to price — and the exact formula is printed on the page. Fuel type stays a filter, not a scored column, because your home dictates it: you should only ever compare within what your house can actually take. Drag any slider and the ranking recomputes live. This guide just gets you to the right starting filter faster.