Introduction: Sub acute and chronic maxillary sinusitis is commonly encountered in day to day ENT practice. Here we compare the management options available in the treatment of these two conditions. Methodology: Endoscopic sinus surgery and antral wash out are two well known and authentic procedures used in the management of maxillary sinusitis. Here we evaluate the effectiveness and advantages of both the procedures in the management of sub acute and chronic maxillary sinusitis. 40 patients were evaluated. 20 patients underwent antral lavage and the remaining 20 underwent Endoscopic sinus surgery. Equal number of patients with sub acute and chronic maxillary sinusits underwent both the procedures. Result: Evaluation was done based on the symptoms, anterior rhinoscopy finding and radiological finding. Conclusion: Endoscopic sinus surgery is an ideal management tool for chronic maxillary sinusitis. But sub acute maxillary sinusits can be treated as a day care procedure by antral washout.