Roundup · Budget
The good news is that a $23 heater and a $460 heater put the same amount of heat into your room. The rest of this page is what the difference actually buys.
How this page is funded: we earn a commission if you buy through the links here, at no extra cost to you. Picks are chosen before links are attached, which is why every roundup names something to skip. Full disclosure.
A cheap space heater produces exactly as much heat as an expensive one: 1,500 W is 5,118 BTU an hour whatever it cost. What more money buys is control, quietness, a named safety listing and build quality — not warmth. Do not compromise on published overheat and tip-over protection at any price.
The single most useful thing to understand before buying a budget heater is that the heat is not the variable. Every electric resistance heater turns essentially 100% of the electricity it draws into heat in the room. A $23 ceramic heater and a $460 designer fan both draw a maximum of 1,500 W from a U.S. wall outlet, and both therefore deliver the same 5,118 BTU per hour and cost the same 27.5 cents an hour to run.
That is unusual. In most product categories the cheap version does the core job worse. Here it does the core job identically, and the money buys everything around the job: a thermostat that holds a number instead of a vibe, a quieter fan, a timer that switches it off at 2 a.m., a metal cabinet, a longer warranty, and a maker who publishes a safety certificate. Those are real things to want. They are just not heat.
| What you get | Bottom of the market (~$20-25) | Middle (~$50-90) |
|---|---|---|
| Heat output at 1,500 W | 5,118 BTU/h | 5,118 BTU/h — identical |
| Running cost per hour | 27.5¢ | 27.5¢ — identical |
| Overheat + tip-over cutoffs | Present on our picks; absent on many | Expected |
| Published safety listing (UL/ETL) | Rare | Common |
| Published low wattage | Rare | Common |
| Thermostat | A dial with no numbers | Often digital, set to a degree |
| Timer | No | Often |
| Warranty | Often none stated | 1-3 years |
What changes as the price rises. Note which column heat is in — it is in neither.
Two rows there are worth dwelling on. A published low wattage is the one budget feature that changes your bill: a heater you can knowingly run at 750 W costs 13.8 cents an hour instead of 27.5. And a published safety listing is the one that is hardest to get at this price — only one pick below names its certificate in the listing, and we have said so on each of the others rather than quietly leaving the row blank.
| Wattage | Per hour | 1 h | 4 h | 8 h |
|---|---|---|---|---|
| 750 W | 13.8¢ | $0.14 | $0.55 | $1.10 |
| 900 W | 16.5¢ | $0.17 | $0.66 | $1.32 |
| 1,500 W | 27.5¢ | $0.28 | $1.10 | $2.20 |
Computed at 18.34¢/kWh — the U.S. residential average for June 2026 (EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026). Your rate is on your own bill; substitute it and the arithmetic still holds. Figures assume full output for the whole period.
Run an eight-hour evening at full output every day for a month and a single 1,500 W heater adds roughly $66 to the bill at the rate below — which is to say, several times the purchase price of the cheapest pick on this page, every month. That is the real economics of a budget heater: the sticker is almost irrelevant compared with the electricity, which is exactly why the 750 W setting matters more than the $2 you saved.
The rate behind every figure on this site
18.34¢per kilowatt-hour
U.S. residential average for June 2026. EIA, Electric Power Monthly, Table 5.6.A, released August 26, 2026.
This is the most recent month EIA has published. Residential rates move seasonally and vary enormously by state — from roughly a dime per kilowatt-hour in parts of the South to more than 40¢ in Hawaii — so treat it as a national reference point, not as your rate.
Not one of the four picks publishes a coverage claim. That is normal at this end of the market and it is more honest than the alternative, which is printing a large number. Size it yourself: 10 watts per square foot, average insulation, 8-foot ceiling.
| Room size | Watts needed | BTU/h | Plug-in heaters |
|---|---|---|---|
| 75 sq ft | 750 W | 2,559 | 1 |
| 100 sq ft | 1,000 W | 3,412 | 1 |
| 150 sq ft | 1,500 W | 5,118 | 1 |
| 200 sq ft | 2,000 W | 6,824 | 2 (different circuits) |
Computed as square feet x 10 W x insulation factor x (ceiling / 8 ft), for an average heated room — 10 W/sq ft, 8 ft ceiling. Heater count assumes the 1,500 W plug-in ceiling.
Ordered cheapest first, because that is how this page is read. Every one publishes both cutoffs; the differences are in wattage disclosure, controls and what the maker is willing to put its name to.
Ranked for fit, not for hype. Coverage and current draw are computed from each unit’s published wattage. Tap a row for the full write-up, or go straight to the listing.
| # | Product | Best for | Covers | Draw | Price |
|---|---|---|---|---|---|
| 1 |  Amazon Basics ceramicThe floor of the category. It publishes the two cutoffs that matter and nothing else, which at this price is the correct trade rather than a corner cut. | The cheapest honest way to heat one room | 150 sq ft | 12.5 A | $20.69 · Check on Amazon−13% |
| 2 |  BLACK+DECKER BHDC201The cheapest heater here that publishes its low wattage, which is the only way to know what the economical setting actually costs instead of guessing at it. | A published 750 W low setting for under $25 | 150 sq ft | 12.5 A | $22.99 · Check on Amazon |
| 3 |  Pelonis PHO15A2AGWOil-filled warmth without the oil-filled price — a mechanical two-knob radiator that does the one thing the type is good at and publishes nothing it does not have. | Silent radiator heat at the lowest price here | 150 sq ft | 12.5 A | $79.99 · Check on Amazon |
| 4 |  Lasko 754201The 900 W low setting is the whole point: it is the rare listing that publishes both settings, so you can compute what the cheap mode actually costs instead of guessing. | One person at one desk | 150 sq ft | 12.5 A | $49.99 · Check on Amazon |
Coverage computed at 10 W/sq ft, average insulation, 8 ft ceiling. Draw computed as watts ÷ volts. Neither figure is a manufacturer claim.
Top pick · The cheapest honest way to heat one room
The floor of the category. It publishes the two cutoffs that matter and nothing else, which at this price is the correct trade rather than a corner cut.
| Published specification | |
|---|---|
| Rated power | 1,500 W at 120 V |
| Thermostat | Adjustable |
| Oscillation | None — it points where you point it |
| Size | 7.52" D x 6.34" W x 9.45" H |
| Safety | Overheat protection and tip-over protection, both published |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | No listing mark is published in the listing text. That is worth knowing at this price: check the rating plate for the UL or ETL mark before you run it unattended. |
Who it is for
A spare room, a dorm, a workshop corner, or anyone who wants to find out whether a space heater solves their problem before spending real money on one.
What it is not for
Unattended or overnight use. Without a published listing mark we would not leave this one running in a room nobody is in.
2 · A published 750 W low setting for under $25
The cheapest heater here that publishes its low wattage, which is the only way to know what the economical setting actually costs instead of guessing at it.
| Published specification | |
|---|---|
| Rated power | 1,500 W high / 750 W low, at 120 V |
| Controls | Four-position switch — off, fan, low, high |
| Thermostat | Adjustable |
| Other modes | Fan-only |
| Safety | Overheat protection and tip-over auto shut-off |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | No listing mark is published in the listing text; check the rating plate for UL or ETL. |
Who it is for
A desk, a home office or a small bedroom where the 750 W setting will do most of the work and the 1,500 W setting is there for the cold snap.
What it is not for
A large or drafty room. At 750 W it covers about 75 sq ft at our sizing rule, and at 1,500 W it is still a personal heater in a small cabinet.
3 · Silent radiator heat at the lowest price here
Oil-filled warmth without the oil-filled price — a mechanical two-knob radiator that does the one thing the type is good at and publishes nothing it does not have.
| Published specification | |
|---|---|
| Rated power | 600 W / 900 W / 1,500 W at 120 V (all three published by Pelonis) |
| Controls | Two knobs — mechanical thermostat and power level |
| Noise | No fan — the type's defining property |
| Portability | Four heavy-duty caster wheels and a front carry handle |
| Safety | Tip-over safety switch, overheat protection, power indicator light |
| Warranty | 1 year |
| Heat type | Oil-filled |
| Maker’s coverage claim | None published — the coverage figure above is ours |
| Safety listing | No listing mark is published in the listing text; check the rating plate for UL or ETL. |
Who it is for
A bedroom or study where silence matters more than speed, and where the budget will not stretch to a De'Longhi.
What it is not for
Anyone who needs heat quickly, anyone who wants to set an actual temperature rather than a knob position, or a room with a child who can reach the controls — there is no child lock.
Sources for this entry
4 · One person at one desk
The 900 W low setting is the whole point: it is the rare listing that publishes both settings, so you can compute what the cheap mode actually costs instead of guessing.
| Published specification | |
|---|---|
| Rated power | 1,500 W high / 900 W low, at 120 V |
| Thermostat | Adjustable dial; 2 heat settings plus fan-only |
| Size | 9.2 x 7 x 6 in, 2.93 lb |
| Cord | 6 ft (Lasko's published figure) |
| Safety | Tip-over switch, overheat protection, cool-touch housing |
| Warranty | 3 years |
| Heat type | Ceramic (PTC) |
| Maker’s coverage claim | 100 sq ft |
| Safety listing | ETL listed, per Lasko's published specification — one of the few in this roundup that names a mark rather than leaving it to the rating plate. |
Who it is for
A desk, a small office, a dorm room — somewhere you want heat on a person rather than in a room.
What it is not for
A nursery, and not unattended use. It publishes a tip-over switch and overheat protection, but no child lock — and the USFA's advice to switch a heater off when you leave the room applies to every unit on this site, listed or not.
And what we did not do: we have not tested these units, owned them, measured them or run them in a room. Everything above is compiled from published manufacturer specifications and live retail listings, with the electrical load, room coverage and running cost computed by us from the published wattage. The full method.
Every roundup on this site names something to skip. It costs us nothing to publish and it is the fastest way to tell whether a buying guide was written for you or for its commission.
The no-name 1,500 W heater with a five-word brand and no model number
This is the largest single group of products in the budget category and we featured none of them. The reason is specific rather than snobbish: this site's whole method is checking what a maker publishes against arithmetic, and these listings publish nothing checkable — no model number, no product page, no safety listing, frequently a brand name that appears and disappears within a season. We cannot verify a tip-over switch exists on a heater whose maker has no website. A heater is a 12.5 A continuous load running unattended in your house; it is the wrong product to buy from an anonymous seller to save eight dollars.
A “1,500 W” heater sold on a claim of 200, 300 or 400 square feet
At 10 watts per square foot, 1,500 W covers 150 sq ft in an average-insulation room with an 8-foot ceiling. Claims of double that are common at the budget end because the number is free to print. The heater is not lying about its wattage — that part is regulated — it is stretching what the wattage will do. Use the wattage, ignore the square footage, and size the room yourself with the calculator.
If your budget stretches past this page, the two upgrades that change daily life rather than the spec sheet are a digital thermostat you can set to a number and silence. The first stops the room swinging between too hot and too cold; see best space heaters with a thermostat. The second matters most in a bedroom, and it means an oil-filled radiator — the cheapest of those is on this page, and the rest are on best oil-filled radiator heaters. Before buying the Pelonis specifically, check both of its models and the duplicate listing: the same radiator is sold twice at different prices.
Yes, at the same wattage. Every electric resistance heater converts essentially all the electricity it draws into heat, so a $23 heater at 1,500 W and a $460 heater at 1,500 W both deliver 5,118 BTU per hour. What you pay more for is control, quietness, a named safety listing and build quality.
A cheap heater from a maker that publishes overheat protection, a tip-over switch and a traceable model number is a reasonable thing to buy. An anonymous listing with no model number and no manufacturer website is not, because there is no way to verify the safety features it claims. That is the line we drew for this page.
The one you run at the lowest wattage for the fewest hours. Type makes no difference to running cost at equal wattage — a heater with a published 750 W setting costs 13.8 cents an hour against 27.5 at full output, which is the only real lever. See the cheapest space heater to run.
About $66 for a single 1,500 W heater run eight hours a day for 30 days, at the U.S. average residential rate of 18.34 cents per kilowatt-hour. That is several times the purchase price of the cheapest heater on this page, every month — which is why the low-wattage setting matters far more than the sticker.
Only if they will run on different circuits. Two 1,500 W heaters draw 25 A between them, which will trip a 15 or 20 A breaker if they share one. Two heaters in different rooms on different circuits is fine and often more useful than one better heater; two in the same room usually is not.
The quietest type there is, and the one with the most marketing to strip away. Four picks, silence first.
A correction, not a product pick: equal wattage means equal cost, and here is what actually varies.
For rooms under 150 sq ft, where 1,500 W is oversized and the thermostat is what actually matters.
1,100 portable heater fires and 65 deaths a year — the federal figures, dated and cited.
The only feature that actually cuts the bill, because it is the only one that turns the heater off.
The monthly figure at 4, 8, 12 and 24 hours a day — including the 24/7 case, computed.
Two real models, six near-identical listings, no model numbers in the titles — and one radiator listed twice at different prices.