Climate change is one of the most discussed topics in academia and scientific research due to the existential threat it poses to the human species. The threat of climate change is closely linked to adverse changes in weather patterns such as severe drought and intense precipitation as well as negative effects on public health as a resurgence of diseases occurs due to increased global temperature. Therefore, there is an imminent necessity to tackle climate change in order to avoid its dangerous consequences from arising. One of the popular strategies considered is reducing the total emissions of greenhouse gases by adopting renewable energy solutions in the residential sector. This research aimed to assess the cost of mitigating greenhouse gas emissions in Massachusetts’ residential sector by evaluating the cost and efficiency of five heating technologies employed: ground source heat pumps, air-source heat pumps, solar hot water systems, solar mass photovoltaic systems and automated wood heating solutions (pellets). Data was collected through the review of vendor websites, empirical research studies, and Massachusetts government resources. Findings reported showed that ground source heat pumps are the best performing technology in terms of mitigated greenhouse gases, lifecycle costs, and costs per ton of mitigated CO2. Air source heat pumps and solar hot water systems also displayed positive results. On the contrary, however, solar mass photovoltaic systems and automated wood heating solutions (pellets) performed poorly in terms of mitigated GHGs and lifecycle costs. Therefore, the study advocates for the adoption of the three technologies: ground source heat pumps, air-source heat pumps, and solar hot water systems in mitigating CO2 levels in the residential sector.