A Rockland heating and cooling contractor is accused of siphoning nearly $8 million from Massachusetts ratepayers by billing the Mass Save energy-efficiency program for heat pumps that were never installed, were installed improperly, or were quietly ripped out after inspectors signed off. MWD Heating & Air Conditioning and its owner, Mark Dyszczyk, now face a civil lawsuit in Plymouth Superior Court, with the complaint alleging deficiencies in the company's work.
According to The Boston Globe, Mass Save administrators identified concerns about MWD's work in April, cancelled pending payments, and subsequently suspended the company. The complaint alleges deficiencies in MWD's work. The alleged conduct primarily involved commercial projects.
Among the incidents cited in the complaint, Dyszczyk allegedly showed up at a Weymouth car wash with a crane at 5 a.m. and removed heating equipment without the owner's consent.
Dyszczyk did not respond to Boston Globe telephone messages or emails seeking comment.
The suit was filed by Eversource Energy, Liberty Utilities, National Grid, Unitil, and the Cape Light Compact JPE. Mass Save funds are collected through surcharges on ratepayers' utility bills. Eversource, National Grid, and the Cape Light Compact JPE said in a statement that they have zero tolerance for actors who exploit Mass Save programs and will take decisive action to hold offenders accountable and protect customers.
Other Mass Save Contractor Cases
The case against MWD lands amid a string of criminal convictions tied to Mass Save contractors. Brothers Joseph Ponzo and Christopher Ponzo pleaded guilty in November 2024 to a bribery and kickback scheme that netted tens of millions of dollars from Mass Save electrical and air-sealing work; in April 2026 they lost an appeal over their sentencing and a nearly $17 million forfeiture order.
Insulation contractor Daniel Cleggett Jr. faced allegations involving Mass Save insulation work. The case included allegations involving fraudulent permit invoices and multiple insulation companies. A co-defendant, Nicholas Espinosa, faced multiple counts, including wire-fraud conspiracy and money-laundering charges; following Espinosa's guilty plea, a sentencing date was scheduled. The case also involved a misrepresentation about property purchases — a case Hoodline previously covered in detail. Unlike those cases, only civil action is currently being taken against Dyszczyk.
Mass Save's Ballooning Budget Fuels Beacon Hill Fight
Mass Save is an energy-efficiency program mandated by Massachusetts state law, funded through surcharges on ratepayers' utility bills, and it now carries a budget of more than $1 billion per year offering rebates and discounts for efficiency upgrades and conversions to cleaner energy. That spending has soared in recent years, and it has become a flashpoint on Beacon Hill: House lawmakers have proposed cuts to Mass Save, while a competing Senate version would maintain current funding levels, according to CommonWealth Beacon.
Mass Save offers rebates and discounts for energy-efficiency upgrades and conversions to cleaner energy.
