# Mountman HP21-SR115 1500W Oscillating Space Heater

Oscillating Space: The Mountman HP21-SR115 is a freestanding indoor electric heater with a claimed 1500W output, 120° oscillation, thermostat, remote and timer. Its multiple controls and flame-effect feature suit buyers wanting adjustable room heating, while the listed 450 sq.ft. coverage and rapid-heating claims are manufacturer statements rather than independently verified performance.

- [Original product page](https://best-deals.pro/product/mountman-hp21-sr115-1500w-oscillating-space-heater)
- [View offer](https://best-deals.pro/visit/mountman-hp21-sr115-1500w-oscillating-space-heater)
- Market: US
- Language: en-US
- Currency: USD
- Brand: Mountman
- Model: HP21-SR115
- Category: Home & Kitchen > Heating, Cooling & Air Quality > Heaters
- Price: 129.96 USD
- Previous price: 459.99 USD
- Discount: 72%
- Price checked: 2026-11-14T06:37:41.293Z
- Rating: 5 / 5
- Reviews: 15

Prices and deal status are the latest recorded data, not a guarantee of availability. Confirm the price and availability with the store.

## At a glance

- The listing describes four modes: 1000W, 1500W, ECO and fan, plus an adjustable thermostat from 41°F to 95°F.
- 120° oscillation is specified, and the listing claims heating coverage up to 450 sq.ft.
- Controls include a remote, touch controls, LED display, 24-hour timer and child lock.
- The listing claims overheat and tip-over protection, and 30-second cooling after shutdown.
- A 3D flame effect is presented as a feature.

## Pros

- Remote and touch controls provide two ways to adjust settings, with an LED display for controls.
- The listed 1000W and 1500W heat settings, ECO, and fan mode offer several operating options.
- Oscillation and a timer can help direct and schedule heat for indoor use.

## Specifications

### Identity
- Brand: Mountman
- Model: HP21-SR115
### Power and heating
- Power configuration: ac
- Heating method: Forced Air
- Heating element: Coil
- Fuel type: Electric
### Dimensions and installation
- Mounting type listed: Floor Mount
- Form factor: Stand Alone, Freestanding
- Dimensions (D x W x H): 9.84"D x 9.84"W x 32.91"H
### Design and use
- Color: Black
- Indoor/outdoor usage: Indoor

## Before you buy

- The advertised 450 sq.ft. coverage, 1-second heating, under-30dB operation, energy savings, and safety protections are manufacturer claims, not independently verified measurements or guarantees. Use the heater according to its instructions and do not treat the child lock or protection features as a substitute for supervision.

## In the box

- 1 space heater (Included)
- 1 remote (Included)
- User manual (Included)

## A good fit for

- Buyers seeking a freestanding indoor heater with remote and touch controls, adjustable thermostat, oscillation and a timer.
- People who want a fan-only mode or a visual flame effect alongside heating settings.

## Less suited to

- Buyers needing independently confirmed room-coverage, noise or energy-use figures.
- Anyone seeking an outdoor heater, since the listed use is indoor.

## Customer feedback

Aggregate ratings are entirely five-star in a small sample, which is encouraging but offers limited evidence about longer-term performance, noise, heating coverage or reliability. No written customer feedback is supplied, so there is no basis to identify specific praised features or complaints. Buyers should weigh the ratings separately from the heater's manufacturer-stated specifications.

## Frequently asked questions

### What heating settings does the Mountman HP21-SR115 list?
The listing specifies 1000W, 1500W, ECO and fan modes, along with a thermostat adjustable from 41°F to 95°F.
### Does this heater oscillate?
Yes. The listing specifies 120° oscillation.
### What controls and timer are listed?
It lists a remote, touch controls, an LED display and a 24-hour timer.
### What comes in the package?
The listed contents are one space heater, one remote and one user manual.

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## Images

![Mountman HP21-SR115 1500W Oscillating Space Heater — 1](https://best-deals.pro/i/rgj0P5lXtodBbzN8ptlzco76fKBrDUp7zNfFsy7j6Td6HQ-YsgN7U5FE1RCZbh4ulPR1Xv_8vFpOvBaa16_lgpey4Zq9IPsg_0WXhCIyKRkiNZ3aQ8pwZj0A.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 2](https://best-deals.pro/i/bWpTRK8a_tpORZ0MsznYESrWPDRVg0eAPBeh2xQwzKJ3JB9x5UjHmOnC1KrUOdccCV4QdLCa1Hq2Mt5C_ZZFWuauOZ7m153jIPJRJL3nxAPYVypzmLDLsaeC.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 3](https://best-deals.pro/i/QeEIsi2rgwSjH_by-MxVIKgMoPpVV9f0G2s8r_fo0wIEXsh7mpPySwVy2ljtor72rqNCb1ZxgxOkRz8LFcpc6Dd36i36QRe6SljeWnA0AqtxwZ9dHMbmXAUI.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 4](https://best-deals.pro/i/4MaUlzRFvH4Ep_nVznKUhBWj__QVhViJlVXLyLvwQBInqwPvlEV7oawJdItPzlzcRJGGFc3QPrHZygNDpuvCRuX-QSpiNwR2IZarzjbwJ4muvOadA_pXYEZ9.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 5](https://best-deals.pro/i/FGf65ZQ0ZoA3YsiBFLhBFLJbM6YPxUUJ--jPcf_CDj3AUcWRPbQMzuX24X72qR5aJyaGuzLVLI0z7MMFNuH4lOr_4kIE7qZQz8gXYVBxRKvQ1iMMN5ysFZZy.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 6](https://best-deals.pro/i/qWPJq58E_R3H7WRnNQGu6GBUgj1uGVe410SCpkunfRS79Znpyp1wSUiFYbjuHiZUK-V0i1v_nqO1ceF_oh_0ML9ZbHcpo8UvEnPWSlcWjbMP72QUWBjbNEXN.jpg)

![Mountman HP21-SR115 1500W Oscillating Space Heater — 7](https://best-deals.pro/i/Rl6vew80P4ssHekTjhkS94iVXIUiA08OrQeo59EmyQHmjMxe35tLikNspvXWm5oJ0jZyJuLQz4ZseDbiYmcNp_0YVmbl1nVsXMQQHTgAN5mg4sKt6Xjro7DG.jpg)