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FranchiseVerdict

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).

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