HHO Carbon Clean Systems vs Merry Maids
Franchise Comparison 2026
Both HHO Carbon Clean Systems and Merry Maids are cleaning & maintenance franchises. HHO Carbon Clean Systems requires an investment of $108K – $185K while Merry Maids requires $127K – $170K. Merry Maids discloses average revenue of $348K; HHO Carbon Clean Systems does not report Item 19 data. Merry Maids has SBA lending data on file with a 5.0% charge-off rate. FranchiseVerdict rates HHO Carbon Clean Systems B (Above average) and Merry Maids B (Above average).
| Metric | HHO Carbon Clean Systems | Merry Maids |
|---|---|---|
| Verdict Grade | BAbove averageAbove average | BAbove averageAbove average |
| Investment Range | $108K – $185K | $127K – $170K |
| Franchise Fee | $45K | $55K |
| Royalty Rate | Greater of 6%-8% of gross sales (tiered by annualized volume: 8% under $500K, 7% $500K-$1M, 6% over $1M) or minimum monthly royalty fee | 7.0% |
| Average Revenue (Item 19) | N/A | $348K |
| SBA Charge-Off Rate | Limited data | 5.0% (115 loans) |
| Total Units | 15 | 802 |
| Unit Growth (YoY) | N/A | N/A |
| Year Began Franchising | 2020 | 2021 |
| FDD Year | 2025 | 2025 |
Investment Range
$108K – $185K
$127K – $170K
Franchise Fee
$45K
$55K
Royalty Rate
Greater of 6%-8% of gross sales (tiered by annualized volume: 8% under $500K, 7% $500K-$1M, 6% over $1M) or minimum monthly royalty fee
7.0%
Average Revenue (Item 19)
N/A
$348K
SBA Charge-Off Rate
Limited data
5.0% (115 loans)
Total Units
15
802
Unit Growth (YoY)
N/A
N/A
Year Began Franchising
2020
2021
FDD Year
2025
2025