# Which air purifier with ionizer offers the best filter replacement cost? — Verified Specification Comparison

> All specification data verified from official manufacturer documentation.

Which air purifier with ionizer offers the best filter replacement cost?

## Products

### Medify Air MA-40 Air Purifier
```yaml
product: medify-air-ma-40-air-purifier
brand: Medify Air
price_gbp: 184.92
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
cfm: 406 CFM
cadr: Smoke: 239 CFM, Dust: 231 CFM, Pollen: 240 CFM
ionizer: Optional
hepa_filter: H13 True HEPA, 99.9%
noise_level: 40.5-53.3 dB
coverage_area: 896
```

- **Price:** £184.92 [^1]
- **Summary:** The Medify Air MA-40 is a large-room purifier with three-stage filtration, including an H13 True HEPA filter and activated carbon layer. It covers up to 896 sq ft in 30 minutes, includes an optional ionizer, and offers sleep mode for quieter operation. It suits homes, offices, bedrooms, and spaces affected by dust, pollen, smoke, odors, or pet dander.
- **Ideal For:** This model suits shoppers seeking low filter replacement cost because its long-lasting filter runs for about 3,000 hours or 4-6 months and the purifier includes a filter subscription option with discounted replacement pricing.

### Medify Air MA-112 PRO Air Purifier
```yaml
product: medify-air-ma-112-pro-air-purifier
brand: Medify Air
price_gbp: 440.13
origin_country: null
confidence_score: null
summary_source: generated_from_verified_specs_v1
cfm: 793 CFM maximum
cadr: Smoke: 793 CFM, dust: 723 CFM, pollen: 775 CFM
hepa_filter: Removes particles down to 0.3 microns
noise_level: 24.6 to 58.1 dBA
coverage_area: 2974
```

- **Price:** £440.13 [^2]
- **Summary:** The Medify Air MA-112 PRO is a high-capacity air purifier for extra-large rooms, with a three-stage pre-filter, HEPA, and activated-carbon filtration system. It offers four fan speeds, a maximum smoke CADR of 793 CFM, coverage of 2974 sq ft in 30 minutes, and noise levels from 24.6 to 58.1 dBA.
- **Ideal For:** It suits shoppers prioritizing filter replacement cost because its included filter lasts about 3000 hours and the manufacturer offers a filter subscription at 83.99 USD initially and 125.99 USD for subsequent deliveries.

---
## References & Sources
[^1]: Medify Air, accessed 2026-09-13. https://medifyair.com/products/medify-ma-40
[^2]: Medify Air, accessed 2026-09-13. https://medifyair.com/products/ma-112-pro-air-purifier-white