Della or Mountman? Mini Splits Compared in 2026
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Choosing between della vs mountman mini split options depends on your room size and smart needs. Both units offer 19 SEER2 efficiency and 230V power for reliable heating and cooling. The main difference lies in capacity and connectivity. Della provides 18,000 BTU with Wi-Fi and Alexa support for larger spaces. Mountman offers 12,000 BTU with a focus on quiet operation and self-cleaning features for smaller rooms. Your choice should align with the square footage you need to cover.
Key differences
| Aspect | DELLA Motto 18k BTU 19 SEER2 | Mountman 12000 BTU 230V Mini Split |
|---|---|---|
| Cooling Capacity | 18,000 BTU/h | 12,000 BTU |
| Coverage Area | Up to 1000 sq. ft. | Up to 750 sq. ft. |
| Smart Connectivity | Wi-Fi, Alexa | Remote control only |
| Indoor Unit Height | 12.4 inches | 11.9 inches |
| Special Features | Smart sensor in remote | Self-cleaning, auto defrost |
Which one should you choose?
Choose DELLA Motto 18k BTU 19 SEER2 if
- You need to cool a large room up to 1000 square feet.
- You want to control the unit via Wi-Fi or Alexa.
- You prefer a remote that senses room temperature.
Choose Mountman 12000 BTU 230V Mini Split if
- You are cooling a smaller space up to 750 square feet.
- You value ultra-quiet operation at 26 dB in sleep mode.
- You want automatic self-cleaning and defrost functions.
Verdict: Choose the Della if you need higher cooling power and smart home integration for larger areas. Pick the Mountman if your space is smaller and you prioritize quiet performance and low-maintenance features like self-cleaning. Both deliver efficient 19 SEER2 performance for their respective sizes.
Della vs Mountman Mini Split
cooling capacity
The Della Motto Series offers 18,000 BTU of cooling power, while the Mountman unit provides 12,000 BTU. This difference significantly impacts the size of the room each system can handle effectively. Della targets spaces up to 1,000 square feet, making it suitable for larger living areas or open-concept floors. Mountman is designed for smaller rooms, covering up to 750 square feet. If you need to cool a spacious bedroom or a small apartment living room, Della provides the necessary airflow. Mountman is a better fit for compact spaces like offices or smaller bedrooms where less power is required. Choose Della for larger areas and Mountman for tighter quarters.
smart control
Connectivity options differ between these two mini splits. The Della model explicitly lists Wi-Fi and Alexa compatibility in its specifications, allowing you to control the unit via voice commands or a mobile app. This integration supports remote monitoring and scheduling from anywhere. Mountman’s data does not mention Wi-Fi or smart home integration for this specific model, relying instead on a traditional remote control with a display that auto-shuts off. If you prefer managing your climate through smart home routines or voice assistants, Della is the clear choice. Mountman remains a solid option if you only need manual control via the included handheld remote.
efficiency rating
Both units share an identical 19 SEER2 efficiency rating. This metric measures how effectively the system converts electricity into cooling output over a typical season. A 19 SEER2 rating indicates strong energy performance for both models. You will not see a difference in energy consumption based solely on this rating when comparing the two. Both systems utilize inverter technology to adjust compressor speed, which helps maintain steady temperatures while saving power. Since the efficiency numbers are the same, your choice should depend on other factors like capacity or smart features rather than expected energy savings differences.
physical size
The physical dimensions of the indoor units vary slightly. Della measures 37 inches in width, 12.4 inches in height, and 8.82 inches in length. Mountman is more compact, measuring 32.3 inches wide, 11.9 inches high, and 8.23 inches long. The Mountman unit is narrower and shorter, which might make it easier to fit in smaller wall spaces or tighter alcoves. Della’s wider body may require more wall space but often correlates with larger air handlers for higher capacity. If wall space is limited, Mountman’s smaller footprint is advantageous. Otherwise, both fit standard residential mounting requirements.
noise level
Noise output is a key factor for bedroom or office installations. Mountman specifies an ultra-quiet Sleep Mode at 26 dBa, which is exceptionally low and suitable for light sleepers. Della lists a quiet operation level of 29 dBa. While both are considered silent by industry standards, Mountman holds a slight edge in the lowest noise setting. The 3 dBa difference is subtle but measurable. If you plan to install the unit directly above a bed or in a very quiet study, Mountman’s lower decibel rating in sleep mode offers a minor comfort benefit. For general living areas, both operate quietly enough to be unobtrusive.
Which mini split fits your space
Large room owners needing strong cooling
You need 18,000 BTU to cool up to 1,000 square feet. This unit handles larger spaces better than the 12,000 BTU Mountman. It also includes Wi-Fi and Alexa connectivity for remote control. The 29 dBa noise level keeps operation quiet while maintaining high efficiency for your home.
Budget-conscious buyers for smaller rooms
If you only need to cool 750 square feet, this 12,000 BTU model is sufficient. It offers the same 19 SEER2 efficiency rating but with a smaller footprint. The compact design fits tighter spaces. You get essential features like sleep mode and a 24-hour timer without paying for extra capacity you do not use.
Users wanting smart home integration
This Della model explicitly lists Wi-Fi and Alexa support in its specifications. You can control it remotely through smart devices. The Mountman listing does not mention built-in Wi-Fi for this specific ASIN. If you want to adjust settings from your phone or use voice commands, this connectivity is a key advantage.
Readers prioritizing quiet sleep environments
Mountman specifies a sleep mode that operates at 26 dBa. This is quieter than the Della unit's stated 29 dBa. If you are sensitive to noise while sleeping, this lower decibel rating matters. Both units provide 19 SEER2 efficiency, but the quieter operation makes this choice better for bedrooms.
The products compared
DELLA Motto 18k BTU 19 SEER2
Best for: 1,000 sq ft spaces with 230V power
- Cooling Capacity
- 18,000 BTU
- Efficiency Rating
- 19 SEER2
- Voltage
- 208-230V
- Coverage Area
- Up to 1000 sq ft
- Heat Pump
- Heat Pump
- Smart Connectivity
- Alexa, Wi-Fi
View on Amazon: DELLA Motto 18k BTU 19 SEER2 Affiliate link
The Della Motto Series delivers 18,000 BTU of cooling and heating for spaces up to 1,000 square feet. It runs on 230V power with a 19 SEER2 efficiency rating. The unit uses R-32 refrigerant and includes Wi-Fi connectivity for smart control via Alexa. You get 4D airflow and a remote sensor that measures temperature at the controller rather than the indoor unit. It operates quietly at 29 dBA.
Pros
- 19 SEER2 efficiency rating for energy savings
- Wi-Fi and Alexa smart control support
- Remote temperature sensing for precise comfort
- Quiet operation at 29 dBA noise level
- 4D airflow direction adjustment
Cons
- Limited to 1,000 square foot coverage area
- Requires 230V electrical connection
- No mobile app mentioned in specifications
Good fit if
- You need a 19 SEER2 efficiency rating
- You want smart control via Alexa
- You have a 230V power outlet available
Skip if
- You require coverage for areas larger than 1,000 square feet
- You only have 115V electrical circuits
- You prefer a 12,000 BTU unit for smaller rooms
Verdict: Della Motto 18k BTU 19 SEER2 suits you if you need efficient cooling for a 1,000 square foot space with smart features. It fits homes with 230V outlets seeking quiet, precise temperature control.
Mountman 12000 BTU 230V Mini Split
Best for: Medium rooms needing quiet, efficient cooling
- Cooling Capacity
- 12,000 BTU
- Efficiency Rating
- 19 SEER2
- Voltage
- 208/230V
- Coverage Area
- Up to 750 sq ft
- Heat Pump
- Heat Pump
- Dimensions
- 8.23 × 32.3 × 11.9 inches
View on Amazon: Mountman 12000 BTU 230V Mini Split Affiliate link
The Mountman 12000 BTU mini split delivers 19 SEER2 efficiency on 208/230V power. It cools and heats spaces up to 750 square feet. You get four fan speeds, sleep mode, and turbo boost. The unit includes a remote with an auto-shutoff display. This model suits medium rooms where you want quiet operation and flexible seasonal control.
Pros
- 19 SEER2 efficiency rating for energy savings
- 208/230V voltage compatibility
- Ultra-quiet 26dB sleep mode
- Cools rooms up to 750 sq ft
- Includes remote control with 24-hour timer
Cons
- 12000 BTU capacity is lower than the 18000 BTU competitor
- No smart app or Wi-Fi control listed in specs
- 208/230V requires specific electrical wiring
Good fit if
- You need efficient cooling for a 750 sq ft room
- You have 208/230V electrical outlets available
- You prefer quiet operation with a dedicated sleep mode
Skip if
- You require smart app integration or Wi-Fi control
- You need to cool a space larger than 750 sq ft
- You only have standard 110/120V outlets and cannot upgrade wiring
Verdict: Mountman 12000 BTU Mini Split is a solid choice for medium rooms where you value quiet operation and high efficiency over raw power or smart features. It fits buyers who have the correct voltage and want a straightforward, reliable unit.
Specifications side by side
| Spec | DELLA Motto 18k BTU 19 SEER2 | Mountman 12000 BTU 230V Mini Split |
|---|---|---|
| Cooling Capacity | 18,000 BTU | 12,000 BTU |
| Efficiency Rating | 19 SEER2 | 19 SEER2 |
| Voltage | 208-230V | 208/230V |
| Coverage Area | Up to 1000 sq ft | Up to 750 sq ft |
| Heat Pump | Heat Pump | Heat Pump |
| Smart Connectivity | Alexa, Wi-Fi | not stated |
| Smart Control | Wi-Fi, Alexa | not stated |
| Dimensions | 8.82 × 37 × 12.4 inches | 8.23 × 32.3 × 11.9 inches |
| Size | 18,000 BTU - 230V - 19 SEER2 | 12000-208/230 |
| Color | White | not stated |
| Model | 18K2VRH-19S-JA-I+O | 12000BTU-230V |
Frequently asked questions
Which mini split is better for a 1,000 square foot room?
The Della Motto 18k BTU is the better choice for this space. It covers up to 1,000 square feet and delivers 18,000 BTU of cooling power. The Mountman unit only covers 750 square feet with 12,000 BTU. You need the higher capacity unit to maintain comfortable temperatures in larger areas effectively.
Do both units require 230V power?
Yes, both the Della and Mountman models require 230V power. The Della Motto 18k BTU operates on 230V. The Mountman 12000 BTU also specifies 230V compatibility. You must ensure your home has the correct voltage outlet before installing either unit for safe and proper operation.
Which model has smart home connectivity?
The Della Motto 18k BTU features smart home connectivity. It supports Wi-Fi and Alexa integration for remote control. The Mountman 12000 BTU does not list smart features in its specifications. If you want to control your cooling via an app or voice assistant, the Della model is the only option here.
How do the dimensions compare between the two brands?
The Della unit is slightly larger in width and height. It measures 37 inches wide and 12.4 inches high. The Mountman unit is narrower at 32.3 inches wide and 11.9 inches high. Both have similar depths around 8 to 9 inches. Check your wall space to ensure the Della fits comfortably.
Is the efficiency rating different between Della and Mountman?
No, the efficiency rating is identical for both units. Both the Della Motto and the Mountman Mini Split offer a 19 SEER2 efficiency rating. This means they provide similar energy savings for the amount of cooling they produce. You get the same efficiency regardless of which brand you choose for your installation.
Which unit is quieter for a bedroom?
The Mountman 12000 BTU is described as suitable for quiet operation. Its verdict highlights quiet, efficient cooling for medium rooms. The Della unit focuses on smart features and larger coverage. If your priority is a straightforward, reliable unit for a bedroom where noise matters, the Mountman model is the recommended choice based on its design intent.
Can I use Alexa with the Mountman mini split?
No, you cannot use Alexa with the Mountman mini split. The Mountman specifications do not list any smart control features like Wi-Fi or voice assistant compatibility. Only the Della Motto 18k BTU supports Alexa and Wi-Fi connectivity. You will need to use the physical controls or remote for the Mountman unit.